CN118845546A - Liquid loose powder and preparation method thereof - Google Patents

Abstract

The application relates to the technical field of cosmetics, and particularly discloses liquid powder and a preparation method thereof. The liquid powder comprises the following raw materials in percentage by mass: the balance of deionized water, 2-10% of humectant, 0.1-1% of preservative, 5-15% of oil control component, 0-0.1% of essence, 0.4-0.5% of suspending agent and 0-10% of cosolvent; the oil control component is at least one of silicon elastomer, silica and organic silicon powder. The liquid powder prepared by the application has better oil control capability, moisture retention and adhesive force, so that the makeup can be more fit with the skin, and the durability of the makeup can be prolonged.

Description

Liquid loose powder and preparation method thereof

Technical Field

The present application relates to the technical field of cosmetics, and more specifically, to a liquid loose powder and a preparation method thereof.

Background Art

Loose powder is a kind of cosmetic, usually used after lotion or cream, to adjust skin tone, absorb excess facial oil, hide pores, set makeup, etc., making the skin tone natural and transparent after makeup.

Existing loose powders are available in two states: powder and liquid. Powdered loose powder mainly comes in the form of pressed powder, which needs to be gently swept on the face with a brush or puff to achieve the effect of setting and controlling oil, making the makeup more lasting. However, consumers are prone to not being able to control the amount of loose powder, resulting in a thick and uneven base makeup. Liquid loose powder is light, easy to apply, and has a moisturizing effect, which can bring moisture to the skin and make the makeup more fitting and natural.

However, liquid loose powder will accelerate the secretion of skin oil in a high temperature environment, resulting in a weakening of the liquid loose powder's setting effect, which in turn affects the durability of the makeup.

Summary of the invention

In order to improve the problem of makeup setting effect of liquid loose powder, the present application provides a liquid loose powder and a preparation method thereof.

In a first aspect, the present application provides a liquid loose powder, which adopts the following technical solution:

A liquid loose powder comprises the following raw materials by mass percentage: balance deionized water, 2-10% moisturizer, 0.1-1% preservative, 5-15% oil control component, 0-0.1% flavor, 0.4-0.5% suspending agent, 0-10% cosolvent; the oil control component is at least one of silicone elastomer, silica, and organic silicon powder.

By adopting the above technical solutions, moisturizers can replenish skin moisture, help makeup fit the skin better, reduce powdery texture, make makeup more durable, and avoid sticking or floating powder; they also have an oil control effect, can balance skin oil secretion, prevent oily face, and keep makeup fresh. Preservatives extend the shelf life of liquid loose powder by inhibiting the growth of microorganisms, ensuring that liquid loose powder remains stable for a period of time before and after opening, and will not deteriorate due to microbial contamination, thus avoiding skin problems caused by the use of deteriorated products.

The oil-control component can absorb excess oil on the skin surface, reduce shine, help liquid loose powder better adhere to the skin, reduce makeup removal caused by oil, and prolong the durability of makeup; among the oil-control components, silicone elastomer has good filling properties, which can fill fine lines and pores on the skin surface, making liquid loose powder smoother when applied, reducing the oily feeling on the skin surface, enhancing the adhesion of liquid loose powder, reducing makeup removal caused by external factors, and prolonging the durability of makeup; it also has good waterproof properties, which can help liquid loose powder resist the erosion of sweat and maintain the stability of makeup in a humid environment.

Silica has good oil absorption properties, can absorb excess oil on the skin surface, help control oily shine, fill fine lines and pores on the skin surface, make the concealer effect of liquid loose powder more uniform; help liquid loose powder better adhere to the skin, reduce makeup removal caused by oil secretion, and prolong the durability of makeup. Organic silicon powder can fill fine lines and pores on the skin surface, enhance the adhesion of liquid loose powder, prolong the durability of makeup, good oil absorption properties, can absorb excess oil on the skin surface, help control oily shine.

Fragrances can add fragrance to liquid loose powders, effectively masking the odor of other components in the raw materials, enhancing the user's sensory experience and making the makeup process more enjoyable. Suspending agents can evenly disperse the solid ingredients in liquid loose powders in the liquid matrix to form a stable suspension system, prevent the precipitation of ingredients, ensure the uniformity of the product during storage and use, extend the durability of makeup, reduce makeup removal caused by ingredient precipitation, and maintain the integrity of makeup. Cosolvents can increase the solubility of insoluble ingredients in liquid loose powders, allowing these ingredients to dissolve better in the liquid matrix, ensuring the uniformity and stability of the formula, helping to extend the durability of makeup, reduce makeup removal caused by inadequate dissolution of ingredients, and maintain the integrity of makeup.

Optionally, the following raw materials are included, calculated by mass percentage: 86.5% deionized water, 1.8% butylene glycol, 0.5% hexylene glycol, 0.5% p-hydroxyacetophenone, 10% vinyl dimethicone/polymethicone silsesquioxane cross-linked polymer, 0.05% fragrance, 0.5% bentonite, 0.10% PPG-26, and 0.05% PEG-40.

By adopting the above technical scheme, butylene glycol and hexylene glycol can replenish skin moisture, help makeup fit the skin better, avoid powder sticking or floating, and also have an oil control effect, balance skin oil secretion, and prevent oily face; parahydroxyacetophenone can inhibit the growth of microorganisms and extend the shelf life of liquid loose powder; vinyl polydimethylsiloxane/polymethicone silsesquioxane crosslinked polymer can enhance the stability of liquid loose powder, making it more comfortable and easy to spread when applied; through a unique three-dimensional network structure, it can absorb excess oil on the skin surface, help control oiliness, make makeup more durable and not easy to come off.

Fragrance can add fragrance to liquid loose powder and enhance the sensory experience of users; bentonite can make the solid components in liquid loose powder evenly dispersed in the liquid matrix, forming a stable suspension system to prevent the precipitation of components; PPG-26 and PEG-40 increase the solubility of insoluble components in liquid loose powder, making these components better dissolved in the liquid matrix, ensuring the uniformity and stability of the formula. Various components interact with each other to improve the stability of liquid loose powder, making it fit the skin, balancing the skin's oil secretion, and keeping the makeup fresh.

Optionally, the moisturizer is at least two of glycerin, butylene glycol, propylene glycol, pentylene glycol, and hexylene glycol; the preservative is at least one of phenoxyethanol, parahydroxyacetophenone, caprylyl glycol, and ethylhexylglycerin; the suspending agent is at least one of bentonite and carbomer; and the cosolvent is at least two of ethanol, PPG-26 (butylene glycol ether-26), and PEG-40 (hydrogenated castor oil).

By adopting the above technical scheme, the various components of the moisturizer, suspending agent and solubilizing agent are further defined, and each component plays its own role. The moisturizer can replenish skin moisture, reduce the powdery texture, make the makeup more durable, avoid the phenomenon of powder sticking or floating, and keep the makeup fresh; the suspending agent can make the solid components in the liquid loose powder evenly dispersed in the liquid matrix to form a stable suspension system; the solubilizing agent can increase the solubility of the insoluble components in the liquid loose powder, ensure the uniformity and stability of the formula, and help to prolong the durability of the makeup.

Optionally, by mass percentage, the mixture further comprises 7-9% golden chamomile extract and 3-5% grape seed extract.

By adopting the above technical solutions, golden chamomile extract has significant soothing and anti-allergic effects, can reduce skin allergic reactions, and has good protection and repair effects on sensitive skin; it also has good antioxidant properties, which helps to alleviate skin aging and keep the skin young. In liquid loose powder, golden chamomile extract can provide a more delicate and comfortable skin feel, make the makeup more natural, and reduce skin irritation. Grape seed extract is rich in proanthocyanidins, which effectively removes free radicals, protects the skin from oxidative damage, and delays the skin aging process; it can also help the skin lock in moisture, provide a long-lasting moisturizing effect, and make the skin look fuller and more moisturized; it also has anti-inflammatory effects, can reduce skin inflammation, help soothe sensitive skin, and reduce redness, swelling and discomfort.

Optionally, the preparation method of the golden chamomile extract comprises the following steps:

(1) washing the golden chamomile with ethanol, then soaking it in purified water for 10-12 hours, heating it at 90-95° C. for 3-5 hours, and filtering it to obtain a first filtrate and a first filter residue;

(2) drying and grinding the first filter residue, dispersing it in propylene glycol, extracting it at an ultrasonic power of 250-300 W for 26-30 min, and filtering it to obtain a second filtrate and a second filter residue;

(3) dispersing the second filter residue in an ethanol aqueous solution, soaking for 1.5-2 hours, then heating and maintaining a slight boiling point for extraction for 1-2 hours, filtering, and obtaining a third filtrate;

(4) The first filtrate, the second filtrate and the third filtrate are mixed, purified water, ginger juice and citric acid are added, and reflux extraction is performed to obtain golden chamomile extract.

By adopting the above technical solution, ethanol is first used to remove impurities and stains on the surface of golden chamomile, and then it is soaked in purified water to release the active ingredients in golden chamomile, such as flavonoids, chamomile oil, chamomile acid, etc., which will dissolve in water. These ingredients have soothing, anti-inflammatory and antioxidant effects on the skin. Further heating is performed to release as many active ingredients in golden chamomile as possible. The active ingredients in golden chamomile have good antioxidant properties, can eliminate free radicals, help alleviate skin aging, and keep the skin young.

The first filter residue is further processed by ultrasonic extraction to extract the active ingredients in the first filter residue, thereby improving the extraction rate of golden chamomile and obtaining a second filtrate; the second filter residue is heated for micro-boiling extraction to further extract the active ingredients in the second filter residue and improve the extraction rate of golden chamomile; the obtained first filtrate, second filtrate and third filtrate are mixed and then reflux extraction is performed; ginger juice contains water and some organic solvent components, which can be used as a solvent to help dissolve the active ingredients in golden chamomile and promote the extraction process.

Moreover, the enzymes contained in ginger juice, such as gingerolase, can catalyze the decomposition of plant cell walls and improve the release efficiency of active ingredients, thereby improving the extraction rate. In addition, the antioxidant components in ginger juice, such as curcumin and vitamin C, can protect plant active ingredients from oxidative damage and maintain their biological activity. Citric acid can adjust the pH value of the extraction solvent and provide a suitable acid-base environment for the stability and solubility of plant active ingredients; citric acid promotes enzymatic reactions in ginger juice and improves the release efficiency of active ingredients. The combination of golden chamomile, ginger juice and citric acid improves the extraction rate of active ingredients in golden chamomile. The obtained golden chamomile extract has good moisturizing and repairing effects. Combined with other components in liquid loose powder, it has the effects of moisturizing, oil control, and long-lasting makeup.

Optionally, the mass ratio of the golden chamomile, ginger juice and citric acid is 1:0.5-0.7:0.1-0.2.

By adopting the above technical solution, the mass ratio of golden chamomile, ginger juice and citric acid is further limited within a certain range, and the obtained golden chamomile extraction rate is high. The active ingredients in golden chamomile have significant soothing and anti-allergic effects, and have good protection and repair effects on sensitive skin. The enzymes contained in ginger juice can catalyze the decomposition of plant cell walls, improve the release efficiency of active ingredients, and thus improve the extraction rate. Citric acid promotes the enzymatic reaction in ginger juice and improves the release efficiency of active ingredients. The combination of golden chamomile, ginger juice and citric acid has a synergistic effect, which improves the extraction rate of effective ingredients in golden chamomile. The obtained golden chamomile extract has good moisturizing and repairing, oil control, and makeup setting and lasting effects.

Optionally, the method for preparing the grape seed extract comprises the following steps:

(1) crushing grape seeds, dispersing them in purified water, adding yeast, sealing and fermenting at room temperature, and vacuum drying them to a moisture content of ≤6% to obtain pretreated grape seed powder;

(2) dispersing the modified chitosan in an acetic acid solution, adding sodium hyaluronate and stirring at a temperature of 60-65° C. for 2-3 hours to obtain a mixed solution;

(3) dispersing the grape seed powder pretreated in step (1) in ethanol, performing ultrasonic extraction to obtain an extract, adding the mixed solution in step (2) to the extract, stirring for 1-2 hours, and drying to obtain a grape seed extract.

By adopting the above technical solution, grape seeds are fermented with yeast to obtain pretreated grape seed powder. Fermentation can decompose complex macromolecules in grape seeds, such as proteins and polysaccharides, and convert them into smaller molecules, such as amino acids and oligosaccharides, thereby improving the availability of bioactive ingredients. It can also promote the release of antioxidant ingredients in grape seeds, such as proanthocyanidins and catechins, enhance their antioxidant capacity, fight free radicals, and protect cells from oxidative damage.

Modified chitosan has good hygroscopicity and moisturizing properties, is easy to apply, and can help liquid loose powder form a protective film on the skin surface to lock in moisture and keep the skin hydrated. Modified chitosan has good film-forming properties and adhesion, which can enhance the adhesion of liquid loose powder on the skin, making the makeup more durable and not easy to remove. It can also promote the regeneration and repair of skin cells, relieve skin damage, redness, swelling and inflammation, improve the stability of liquid loose powder, prevent the stratification and deterioration of ingredients, and extend the shelf life of the product.

Sodium hyaluronate has a strong moisturizing ability. It can absorb and retain a large amount of water, so that the skin remains hydrated while applying makeup. It can also fill fine lines and wrinkles on the skin surface, making the skin surface smoother, reducing the appearance of fine lines, and making makeup more docile. Modified chitosan and sodium hyaluronate cross-linking enhances the moisturizing effect, improves the ductility of the product, and makes the product more evenly distributed on the skin. Modified chitosan has the effect of promoting skin cell regeneration and repair, while sodium hyaluronate can promote the skin's self-repair mechanism. The combination of the two can accelerate the healing of skin damage and reduce inflammation and redness.

In step (3), the mixed liquid and the extract are mixed to enhance the antioxidant effect of the extract, improve the hygroscopicity and moisturizing properties of the extract, accelerate the healing of skin damage, prevent the stratification and deterioration of the liquid loose powder ingredients, and cooperate with other components to have the effect of oil control and moisturizing, thereby extending the shelf life of the product.

Preferably, the mass ratio of the grape seed, modified chitosan and sodium hyaluronate is 1:0.3-0.5:0.2-0.4.

By adopting the above technical solution, the mass ratio of grape seeds, modified chitosan and sodium hyaluronate is further limited within a certain range, and the obtained grape seed extract has strong antioxidant effect, hygroscopicity and moisturizing properties, which can accelerate the healing of skin damage, prevent the stratification and deterioration of liquid loose powder ingredients, and extend the shelf life of the product. The combination of grape seeds, modified chitosan and sodium hyaluronate has a synergistic effect. The modified chitosan and sodium hyaluronate are cross-linked, and the grape seed extract can be embedded in the cross-linked structure of the modified chitosan, which improves the adhesion of the grape seed extract, and subsequently makes the liquid loose powder easier to fit the skin, increasing the moisture, oil control and makeup durability.

Preferably, the preparation method of the modified chitosan comprises the following steps: adding carboxymethyl chitosan to a sodium hydroxide aqueous solution, heating to 75-80° C., keeping the temperature for 1-2 hours, dropwise adding a 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, acrylamide and an initiator, keeping the temperature for 2-3 hours, adjusting to neutrality, and obtaining pretreated chitosan;

Add guar gum and sodium hydroxymethyl cellulose to the pretreated chitosan, stir at 70-75° C. for 1-2 hours, and dry to obtain modified chitosan.

By adopting the above technical scheme, carboxymethyl chitosan is alkalized, and a polymerization reaction occurs with 3-chloro-2-hydroxypropyltrimethylammonium chloride and acrylamide under the action of an initiator. Carboxymethyl chitosan and acrylamide are grafted onto 3-chloro-2-hydroxypropyltrimethylammonium chloride to form a macromolecular polymer with a network structure.

Guar gum has thickening and moisturizing effects. It can cross-link with pre-treated chitosan to increase the viscosity of the system, form a stable suspension system, prevent the liquid powder particles from settling, and help the skin lock in moisture to keep the skin hydrated. It also has water absorption and film-forming properties, which helps absorb excess oil on the skin surface, thereby indirectly achieving a certain oil control effect. Sodium hydroxymethylcellulose increases the stability of the system, allows the components in the system to be mixed evenly, and adjusts the fluidity of the system, making it easier for liquid powder to be evenly applied to the skin. It works with pre-treated chitosan and guar gum to improve the fluidity, stability and film-forming properties of the system.

In a second aspect, the present application provides a method for preparing a liquid loose powder, comprising the following steps:

(1) Dispersing the moisturizer and preservative in deionized water, stirring at 60-65° C. until the particles are completely dissolved and the solution is completely clear, thereby obtaining phase A;

(2) Add the oil control component and the suspending agent to phase A, stir for 2-5 min at a stirring rate of 300-500 rpm to obtain phase B;

(3) Mix phase A and phase B to obtain a mixed solution, disperse the flavor and cosolvent in the mixed solution, and stir for 1-3 minutes at a stirring rate of 300-400 rpm to obtain a liquid loose powder.

By adopting the above technical solution and the above operating method, the preparation is simple, and the various components are mixed evenly, which helps to improve the uniformity and stability of the liquid loose powder, and subsequently helps the liquid loose powder to fit the skin and improve the oil control property of the liquid loose powder.

In summary, this application has the following beneficial effects:

1. The oil-control component in the present application can absorb excess oil on the skin surface, reduce oiliness, help liquid loose powder to better adhere to the skin, reduce makeup removal caused by oil, and prolong the durability of makeup; in the oil-control component, the silicone elastomer has good filling properties, can fill fine lines and pores on the skin surface, make the liquid loose powder smoother when applied, reduce the oily feeling on the skin surface, enhance the adhesion of the liquid loose powder, reduce makeup removal caused by external factors, and prolong the durability of makeup.

2. The moisturizer in this application can replenish skin moisture, help makeup fit the skin better, reduce powdery texture, make makeup more durable, and avoid powder sticking or floating; it also has an oil control effect, can balance skin oil secretion, prevent oily face, and keep makeup fresh.

3. The suspending agent in this application can make the solid components in the liquid loose powder evenly dispersed in the liquid matrix to form a stable suspension system, prevent the precipitation of components, ensure the uniformity of the product during storage and use, prolong the durability of the makeup, reduce the makeup removal caused by the precipitation of components, and maintain the integrity of the makeup.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a photo of a blank arm;

Figure 2 shows a photo of using equal amounts of foundation;

Figure 3 is a photo of uniform smearing;

Figure 4 is a photo of spraying area 1;

FIG. 5 is a photograph of the tissue after being pressed.

DETAILED DESCRIPTION

Preparation Example of Golden Chamomile Extract

Preparation Example 1-1

The preparation method of golden chamomile extract comprises the following steps:

(1) washing 1.2 kg of golden chamomile with 2 L of 75% ethanol solution, then soaking in 1.8 L of purified water for 11 h, heating at 93° C. for 4 h, and filtering to obtain a first filtrate and a first filter residue;

(2) drying and grinding the first filter residue, dispersing it in 1.5 L of propylene glycol, extracting it for 28 min at an ultrasonic power of 270 W, and filtering it to obtain a second filtrate and a second filter residue;

(3) dispersing the second filter residue in 1 L of 75% by mass ethanol aqueous solution, soaking for 2 h, then heating and maintaining a slight boiling point for 1.5 h, filtering, and obtaining a third filtrate;

(4) The first filtrate, the second filtrate and the third filtrate were mixed, 0.5 L of purified water, ginger juice and citric acid were added, and reflux extraction was performed to obtain golden chamomile extract.

The mass ratio of golden chamomile, ginger juice and citric acid is 1:0.5:0.2.

Preparation Example 1-2

The difference from Preparation Example 1-1 is that steps (2) to (3) are not performed.

Preparation Example 1-3

The difference from Preparation Example 1-1 is that in step (4), ginger juice is not added.

Preparation Example 1-4

The difference from Preparation Example 1-1 is that in step (4), citric acid is not added.

Preparation Example 1-5

The difference from Preparation Example 1-1 is that the mass ratio of golden chamomile, ginger juice and citric acid is 1:0.7:0.1.

Preparation Example 1-6

The difference from Preparation Example 1-1 is that the mass ratio of golden chamomile, ginger juice and citric acid is 1:0.2:0.5.

Preparation Example of Grape Seed Extract

Preparation Example 2-1

The preparation method of grape seed extract comprises the following steps:

(1) 1.1 kg of grape seeds were crushed and dispersed in 0.35 L of purified water, 0.1 kg of yeast was added, and the mixture was sealed and fermented at room temperature for 6 days, and vacuum dried to a moisture content of ≤6% to obtain pretreated grape seed powder; the yeast was Hansenula sp. purchased from Shanghai Xuanya Biotechnology Co., Ltd., item number XY-WSW-2275.

(2) dispersing the modified chitosan in 1 L of 20% acetic acid solution, adding sodium hyaluronate and stirring at 65° C. for 2.5 h to obtain a mixed solution;

(3) The grape seed powder pretreated in step (1) was dispersed in 2 L of ethanol, and ultrasonic extraction was performed to obtain an extract. The mixed solution in step (2) was added to the extract, stirred for 1.5 h, and dried to obtain a grape seed extract.

The mass ratio of grape seeds, modified chitosan and sodium hyaluronate is 1:0.5:0.2.

The preparation method of modified chitosan comprises the following steps: adding 0.8 kg of carboxymethyl chitosan to 0.5 L of a sodium hydroxide aqueous solution with a mass fraction of 20%, heating to 80° C., keeping the temperature for 2 hours, dripping 1.2 kg of a 0.4 mol/L 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, 0.2 kg of acrylamide and 0.09 kg of an initiator, wherein the initiator is composed of benzoyl peroxide and N,N-dimethylaniline in a weight ratio of 1:3, and the amount of benzoyl peroxide is 0.01 kg, keeping the temperature for 3 hours, adjusting to neutrality, and obtaining pretreated chitosan;

Add guar gum and sodium hydroxymethyl cellulose to the pretreated chitosan, stir at 75°C for 2 hours, and dry to obtain modified chitosan.

Preparation Example 2-2

The difference from Preparation Example 2-1 is that in step (2), no modified chitosan is added.

Preparation Example 2-3

The difference from Preparation Example 2-1 is that in step (2), sodium hyaluronate is not added.

Preparation Example 2-4

The difference from Preparation Example 2-1 is that the mass ratio of grape seeds, modified chitosan and sodium hyaluronate is 1:0.3:0.4.

Preparation Example 2-5

The difference from Preparation Example 2-1 is that the mass ratio of grape seeds, modified chitosan and sodium hyaluronate is 1:0.1:0.6.

Preparation Example 2-6

The difference from Preparation Example 2-1 is that guar gum is not added in the preparation method of modified chitosan.

Preparation Example 2-7

The difference from Preparation Example 2-1 is that in the preparation method of modified chitosan, sodium hydroxymethyl cellulose is not added.

Example

Example 1

A liquid loose powder, with a total mass of 1 kg, includes the following raw materials: 86.5% deionized water, 1.8% butylene glycol, 0.5% hexylene glycol, 0.5% p-hydroxyacetophenone, 10% vinyl dimethicone/polymethicone silsesquioxane cross-linked polymer, 0.05% flavor, 0.5% bentonite, 0.10% PPG-26, and 0.05% PEG-40. The flavor is vanillin purchased from Guangdong Ousman Biotechnology Co., Ltd.

Vinyl dimethicone/polymethylsiloxane silsesquioxane cross-linked polymer was purchased from Hubei Langbowan Biopharmaceutical Co., Ltd.

The preparation method of liquid loose powder comprises the following steps: (1) dispersing butanediol, hexylene glycol and p-hydroxyacetophenone in deionized water, stirring at 65° C. until the particles are completely dissolved and the solution is completely clear, thereby obtaining phase A;

(2) adding vinyl polydimethylsiloxane/polymethylsiloxane silsesquioxane crosslinked polymer and bentonite to phase A, stirring for 4 minutes at a stirring rate of 400 rpm to obtain phase B;

(3) Mix phase A and phase B to obtain a mixed solution, disperse the flavor, PPG-26 and PPG-40 in the mixed solution, and stir for 3 minutes at a stirring rate of 300 rpm to obtain a liquid loose powder.

Example 2

A liquid loose powder, which differs from Example 1 in that it comprises the following raw materials: 69% of deionized water, 4% of butylene glycol, 4% of hexylene glycol, 1% of p-hydroxyacetophenone, 12.5% of vinyl dimethicone/polymethicone silsesquioxane cross-linked polymer, 1% of flavor, 0.5% of bentonite, 3% of PPG-26, and 5% of PEG-40.

Example 3

A liquid loose powder, which differs from Example 1 in that it comprises the following raw materials: 90% of deionized water, 1.5% of butylene glycol, 1.5% of hexylene glycol, 0.1% of p-hydroxyacetophenone, 5% of vinyl dimethicone/polymethicone silsesquioxane cross-linked polymer, 0.07% of flavor, 0.4% of bentonite, 0.41% of PPG-26, and 1.02% of PEG-40.

Example 4

A liquid loose powder, which differs from Example 1 in that it contains 76.5% deionized water, 7% golden chamomile extract, and 3% grape seed extract, wherein the golden chamomile extract is purchased from Xi'an Qiuhe Biotechnology Co., Ltd., and the grape seed extract is purchased from Jiangsu Jiujia Biotechnology Co., Ltd.

Example 5

A liquid loose powder, which is different from Example 4 in that it contains 72.5% deionized water, 9% golden chamomile extract, and 5% grape seed extract.

Example 6

A liquid loose powder, which is different from Example 4 in that the golden chamomile extract is prepared using Preparation Example 1-1.

Example 7

A liquid loose powder, which is different from Example 6 in that the golden chamomile extract is prepared using Preparation Example 1-2.

Example 8

A liquid loose powder, which is different from Example 6 in that the golden chamomile extract is prepared using Preparation Example 1-3.

Example 9

A liquid loose powder, which is different from Example 6 in that the golden chamomile extract is prepared using Preparation Example 1-4.

Example 10

A liquid loose powder, which is different from Example 6 in that the golden chamomile extract is prepared using Preparation Example 1-5.

Embodiment 11

A liquid loose powder, which is different from Example 6 in that the golden chamomile extract is prepared using Preparation Example 1-6.

Example 12

A liquid loose powder, which is different from Example 4 in that the grape seed extract is prepared in Preparation Example 2-1.

Example 13

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared in Preparation Example 2-2.

Embodiment 14

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared in Preparation Example 2-3.

Embodiment 15

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared according to Preparation Example 2-4.

Example 16

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared according to Preparation Example 2-5.

Embodiment 17

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared according to Preparation Example 2-6.

Embodiment 18

A liquid loose powder, which is different from Example 12 in that the grape seed extract is prepared according to Preparation Example 2-7.

Comparative Example

Comparative Example 1

A liquid loose powder, which is different from Example 1 in that vinyl dimethicone/polymethicone silsesquioxane crosslinked polymer is not added.

Comparative Example 2

A liquid loose powder, which differs from Example 1 in that bentonite is not added.

Performance testing

The liquid loose powders prepared in Examples 1-18 and Comparative Examples 1-2 were subjected to performance tests;

1. Test the stability of the loose powder in the examples and comparative examples according to the heat-resistant and cold-resistant operation steps in Q31/0120000051C030: Fill the loose powder in a colorless and transparent 35mL glass container and store it at 25℃ and 45℃ respectively. After 48 hours, observe the state of the loose powder, apply a small amount of it on the back of the hand after returning to room temperature, and evaluate its performance. 31-40 points means that the powder is uniform and no abnormality is confirmed; 21-30 points means that the powder has a slight amount of agglomeration and adhesion; 11-20 points means that the powder has a small amount of agglomeration and adhesion; 0-10 points means that the powder has obvious agglomeration and becomes a paste.

2. Makeup effect evaluation test

200 volunteers with oily or mixed skin, aged 20-30 years old, were selected and divided into 20 groups, 10 people in each group. The volunteers were tested at a temperature of 21±1°C and a humidity of 50±5%. The volunteers used the bridge of the nose as the dividing line to try the embodiment and the comparative example on the right cheek. The left cheek is the base area, and the right side is the test area. A comparative test was conducted after 8 hours. The test items include facial moisture (tested by a moisture test pen), facial oiliness (tested by a skin oil detector), and the natural durability of the makeup effect (the makeup effect is observed with the naked eye, with a maximum of 10 points and a minimum of 0 points). The test results are shown in Table 1.

Table 1 Test data of embodiments and comparative examples

Table 2 Test data of embodiments and comparative examples

Combining the examples and the data in the table, it can be seen that the liquid loose powder prepared in Examples 1-3 has good stability, makeup durability, oil control and moisturizing properties. Among them, the score of Example 1 after 48 hours at 25°C is 37.2 points, and the score after 48 hours at 40°C is 33.5 points, indicating that the powder is uniform and has good stability. The facial moisture is increased by 13%, the facial oiliness is reduced by 14%, and the natural makeup durability score is 8.5, which has good comprehensive performance. The various components cooperate with each other to help the makeup fit the skin better, moisturize and control oil, making the makeup more durable and not easy to come off.

Equal amounts of liquid foundation prepared in Example 1 of patent CN114288218A were applied on the arms, as shown in FIG2 , wherein FIG1 is a blank arm control.

Then apply the liquid foundation evenly and let it stand for 2 minutes to form area 1 and area 2, as shown in Figure 3.

Finally, the liquid loose powder prepared in Example 1 of the present application was sprayed onto area 1 and allowed to stand for 3 minutes to form a film on the skin surface, as shown in FIG. 4 , which is a photograph of the sprayed area 1.

Test anti-migration: Use a tissue to press area 1 and area 2 respectively. Figure 5 shows the situation of the tissue after pressing. As can be seen from Figure 5, there is no obvious mark on the tissue in area 1, and there is obvious liquid foundation residue on the tissue in area 2, indicating that the liquid loose powder has an excellent makeup-setting function.

The liquid loose powder of Example 4-5 also includes golden chamomile extract and grape seed extract, both of which are commercially available. As can be seen from the table, compared with Example 1, the score of Example 4 after 48 hours at 25°C is 38.3 points, and the score after 48 hours at 40°C is 34.7 points, indicating that the powder is uniform and has good stability. The facial moisture is increased by 15%, the facial oiliness is reduced by 16%, and the natural and durable makeup effect is scored as 8.7, indicating that the golden chamomile extract can provide a more delicate and comfortable skin feel, making the makeup more natural, and the grape seed extract can help the skin lock in moisture and provide a long-lasting moisturizing effect. In combination with other components, the oil control effect is increased.

The golden chamomile extracts of Examples 6-11 were prepared in-house. As can be seen from Table 1, compared with Example 1, the scores at 25°C and 40°C after 48 hours changed little, indicating that the changes in the steps in the preparation method of the golden chamomile extract had little effect on the stability of the powder. In Example 6, the facial moisture increased by 25%, the facial oiliness decreased by 26%, and the natural makeup durability score was 9.5. In Example 7, steps (2)-(3) were not performed, and the increase in facial moisture decreased, the decrease in facial oiliness decreased, and the natural makeup durability score decreased. In Examples 8-9 and Example 11, ginger juice and citric acid were not added, and the mass ratio of golden chamomile, ginger juice and citric acid was changed, respectively, and the increase in facial moisture decreased, the decrease in facial oiliness decreased, and the natural makeup durability score decreased, indicating that the secondary treatment of the residue to extract the active ingredients in the residue increased the extraction rate of golden chamomile, and ginger juice and citric acid were used to further promote the extraction of active ingredients and increase the extraction rate of golden chamomile.

In addition, the enzymes contained in ginger juice can catalyze the decomposition of plant cell walls and improve the release efficiency of active ingredients, thereby increasing the extraction rate. Citric acid promotes the enzymatic reaction in ginger juice and improves the release efficiency of active ingredients. The combination of golden chamomile, ginger juice and citric acid has a synergistic effect, which improves the extraction rate of effective ingredients in golden chamomile. The obtained golden chamomile extract has a good moisturizing and repairing effect.

The grape seed extract of Example 12 was homemade. As can be seen from Table 1, compared with Example 1, the score was 40.0 points at 25°C and 40°C after 48 hours, the facial moisture increased by 30%, the facial oiliness decreased by 31%, and the natural and durable makeup effect score was 10.0, indicating that the grape seed extract prepared in the present application locks in moisture, keeps the skin hydrated, and cooperates with other components to further absorb excess oil on the skin surface, helps control oiliness, and can enhance the adhesion of liquid loose powder on the skin, making the makeup more durable and not easy to come off.

In Examples 13-16, no modified chitosan, no sodium hyaluronate, and the mass ratio of grape seed, modified chitosan and sodium hyaluronate were added to the grape seed extract, respectively. The score did not change significantly after 48 hours at 25°C, but changed significantly at 40°C, indicating that the changes in the steps in the preparation method of the grape seed extract had different effects on the stability of the powder, while the increase in facial moisture, the reduction in facial oiliness, and the natural durability score of the makeup effect decreased, indicating that the combination of grape seed, modified chitosan and sodium hyaluronate had a synergistic effect, the modified chitosan and sodium hyaluronate were cross-linked, and the grape seed extract could be embedded in the cross-linked structure of the modified chitosan, thereby improving the adhesion of the grape seed extract, making it easier for the liquid loose powder to fit the skin, increasing the moisturizing property, and having a better oil control effect in combination with other components.

In the preparation methods of modified chitosan in Examples 17-18, no guar gum and no sodium hydroxymethyl cellulose were added, respectively. The scores did not change significantly after 48 hours at 25°C, but changed significantly at 40°C. The increase in facial moisture and the reduction in facial oiliness decreased, as well as the natural and lasting makeup effect scores decreased, indicating that sodium hydroxymethyl cellulose increased the stability of the system, made the components in the system mix evenly, adjusted the fluidity of the system, made it easier to evenly apply the liquid loose powder to the skin, and cooperated with the pretreated chitosan and guar gum to improve the fluidity, stability, oil control and film-forming properties of the system.

In Comparative Examples 1-2, vinyl dimethicone/polymethicone silsesquioxane crosslinked polymer and bentonite were not added, and the score changes after 48 hours at 25°C and 40°C were significantly reduced, while the increase in facial moisture, the reduction in facial oiliness, and the natural durability of makeup effect were significantly reduced, indicating that the powder prepared in the present application has good stability, the combination of each component is indispensable, and the combination of each component has good moisturizing, oil control and makeup durability.

This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims (10)

1. A liquid loose powder, characterized in that it comprises the following raw materials, by mass percentage: balance deionized water, 2-10% moisturizer, 0.1-1% preservative, 5-15% oil control component, 0-0.1% flavor, 0.4-0.5% suspending agent, and 0-10% cosolvent; the oil control component is at least one of silicone elastomer, silica, and organic silicon powder. 2. A liquid loose powder according to claim 1, characterized in that it comprises the following raw materials, by mass percentage: 86.5% deionized water, 1.8% butylene glycol, 0.5% hexylene glycol, 0.5% p-hydroxyacetophenone, 10% vinyl dimethicone/polymethicone silsesquioxane crosslinked polymer, 0.05% flavor, 0.5% bentonite, 0.10% PPG-26, and 0.05% PEG-40. 3. A liquid loose powder according to claim 1, characterized in that the humectant is at least two of glycerol, butylene glycol, propylene glycol, pentylene glycol, and hexylene glycol; the preservative is at least one of phenoxyethanol, p-hydroxyacetophenone, caprylyl glycol, and ethylhexylglycerin; the suspending agent is at least one of bentonite and carbomer; and the cosolvent is at least two of ethanol, PPG-26, and PEG-40. 4. The liquid loose powder according to claim 1, characterized in that, by mass percentage, it further comprises 7-9% golden chamomile extract and 3-5% grape seed extract. 5. The liquid loose powder according to claim 4, characterized in that the preparation method of the golden chamomile extract comprises the following steps: (1) washing the golden chamomile with ethanol, then soaking it in purified water for 10-12 hours, heating it at 90-95° C. for 3-5 hours, and filtering it to obtain a first filtrate and a first filter residue; (2) drying and grinding the first filter residue, dispersing it in propylene glycol, extracting it at an ultrasonic power of 250-300 W for 26-30 min, and filtering it to obtain a second filtrate and a second filter residue; (3) dispersing the second filter residue in an ethanol aqueous solution, soaking for 1.5-2 hours, then heating and maintaining a slight boiling point for extraction for 1-2 hours, filtering, and obtaining a third filtrate; (4) The first filtrate, the second filtrate and the third filtrate are mixed, purified water, ginger juice and citric acid are added, and reflux extraction is performed to obtain golden chamomile extract. 6. A liquid loose powder according to claim 5, characterized in that the mass ratio of the golden chamomile, ginger juice and citric acid is 1:0.5-0.7:0.1-0.2. 7. The liquid loose powder according to claim 4, characterized in that the preparation method of the grape seed extract comprises the following steps: (1) crushing grape seeds, dispersing them in purified water, adding yeast, sealing and fermenting at room temperature, and vacuum drying them to a moisture content of ≤6% to obtain pretreated grape seed powder; (2) dispersing the modified chitosan in an acetic acid solution, adding sodium hyaluronate and stirring at a temperature of 60-65°C for 2-3 hours to obtain a mixed solution; (3) The grape seed powder pretreated in step (1) is dispersed in ethanol, subjected to ultrasonic extraction to obtain an extract, the mixed solution in step (2) is added to the extract, stirred for 1-2 hours, and dried to obtain a grape seed extract. 8. A liquid loose powder according to claim 7, characterized in that the mass ratio of the grape seed, modified chitosan and sodium hyaluronate is 1:0.3-0.5:0.2-0.4. 9. A liquid loose powder according to claim 7, characterized in that the preparation method of the modified chitosan comprises the following steps: adding carboxymethyl chitosan to a sodium hydroxide aqueous solution, heating to 75-80° C., keeping the temperature for 1-2 hours, dripping 3-chloro-2-hydroxypropyltrimethylammonium chloride aqueous solution, acrylamide and initiator, keeping the temperature for 2-3 hours, adjusting to neutrality, and obtaining pretreated chitosan; Add guar gum and sodium hydroxymethyl cellulose to the pretreated chitosan, stir at 70-75° C. for 1-2 hours, and dry to obtain modified chitosan. 10. The method for preparing a liquid loose powder according to claim 1, characterized in that it comprises the following steps: (1) Disperse the moisturizer and preservative in deionized water and stir at 60-65°C until the particles are completely dissolved and the solution is completely clear to obtain phase A; (2) Add the oil control component and suspending agent to phase A, stir for 2-5 minutes at a stirring rate of 300-500 rpm to obtain phase B; (3) Mix phase A and phase B to obtain a mixed solution, disperse the flavor and cosolvent in the mixed solution, and stir for 1-3 minutes at a stirring rate of 300-400 rpm to obtain liquid loose powder.