JP6845392B2 - Cosmetic composition - Google Patents

Description

The present invention relates to a cosmetic composition in which an oil phase is suspended in an aqueous phase.

Cosmetic compositions consisting of an aqueous phase and an oil phase have been conventionally used. Such compositions (for example, Patent Documents 1 and 2) are used by mixing an aqueous phase and an oil phase by shaking at the time of use. When the aqueous phase and the oil phase coexist in this way, the aqueous phase and the oil phase are separated to form a two-layer composition in which the oil phase floats on the aqueous phase.

However, when the oil agent contains a component that is easily oxidized, since the oil phase is present on the aqueous phase, it comes into contact with air, and deterioration of quality due to the influence of oxidation also becomes a problem.

JP-A-2002-255739 Japanese Unexamined Patent Publication No. 2004-196713

An object of the present invention is to provide a cosmetic composition that is less susceptible to oxidation and can suppress deterioration over time even when it contains an oily component that is easily oxidized.

The cosmetic composition of the present invention is characterized by containing an oil phase composed of an oil agent compatible with triglyceryl (caprylic acid / capric acid / succinic acid) and an aqueous phase. By using triglyceryl (caprylic acid / capric acid / succinic acid) which is a specific oil agent in this way, the oil phase can be made to exist in a spherical shape in the aqueous phase.

According to the cosmetic composition of the present invention, since the oil agent can be present in the aqueous phase in a spherical shape, contact with air can be reduced and oxidative deterioration of the oil agent can be prevented.

Hereinafter, embodiments of the present invention will be described.

The cosmetic composition of the present invention contains an oil phase composed of an oil agent compatible with triglyceryl (caprylic acid / capric acid / succinic acid) and an aqueous phase. By dissolving the oil agent in the above (caprylic acid / capric acid / succinic acid) triglyceryl, the oil phase can be made to exist in a spherical shape in the aqueous phase.

The oil agent used in the present invention is not particularly limited as long as it is compatible with triglyceryl (caprylic acid / capric acid / succinic acid). Examples of such oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyl decyl dimethyl octanate, cetyl lactate, and lactic acid. Myristic, octyldodecyl lactate, lanolin acetate, isosetyl stearate, isosetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkylglycol monoisostearate, dicapric acid Neopentylglycol, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylrolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, tri-2 -Glyceryl ethylhexanoate, tri (capril, caprin, myristic, stearic acid) glyceride, trimethyl propane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glycerin trimyristate, tri-2-heptyl Glyceride undecanoate, methyl ester of castor oil fatty acid, oleyl oleate, acetoglyceride, 2-heptyl undecyl palmitate, diisobutyl adipate, glycerin oligoester (adipic acid, 2-ethylhexanoic acid, stearic acid), (2-hexyldecane) Acid / Sevacinic acid) Diglyceryl oligoester, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyllaurate, di-2-ethylhexyl sebacate, myristic acid 2- Hexyldecyl, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, sunflower oil, mink oil, olive oil, Rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern ka oil, castor oil, flaxseed oil, saflower oil, grape seed oil, cotton seed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, Rice bran oil, stearic acid oil, Japanese kiri oil, jojoba oil, germ oil, evening primrose oil, glycerin trioctanoate, triisopalmichi Examples thereof include ester oils such as glycerin acid, ethyl acetate, butyl acetate and triethyl citrate, tocopherol acetate, retinol palmitate, ubiquinone, ascorbic acid and ascorbic tetrahexyldecanoate.
Of these, oily components that are easily oxidized, such as tocopherol acetate, retinol palmitate, ubiquinone, ascorbic acid, and ascorbic tetrahexyl decanoate, are particularly preferable.

These oils are mixed in a proportion of 0.01 to 30% by mass, preferably 0.1 to 20% by mass, based on triglyceryl (caprylic acid / capric acid / succinic acid). If the proportion of the oil agent is less than 0.01% by mass, the effect as an oil agent cannot be obtained, and if it exceeds 30% by mass, the balance in the preparation may be lost and separation may occur.

Further, a plurality of water-soluble components such as various extracts may be added to the aqueous phase.

In the cosmetic composition of the present invention, the weight ratio of the aqueous phase to the oil phase is preferably about 1: 0.01 to 1: 1. If the amount of the oil phase is small, it becomes difficult to obtain the effect of the oil agent, and if it is too large, the balance between the water phase and the oil phase is lost, and it becomes difficult for the oil phase to exist in the water phase in a spherical shape.

Further, the cosmetic composition of the present invention contains surfactants, oils and fats, pH adjusters, moisturizers, which are generally used as compounding ingredients in cosmetics and quasi-drugs as other ingredients in addition to the above ingredients. Solvents, preservatives, plant extracts, anti-inflammatory agents, pigments, fragrances and the like can be appropriately added. However, since the oil agent can be stably kept in a spherical shape without adding a surfactant, it is preferable not to add unnecessary components such as a surfactant as much as possible.

The cosmetic composition of the present invention can be produced simply by dissolving an oil component in triglyceryl (caprylic acid / capric acid / succinic acid) and then adding it to water. In addition, the cosmetic composition of the present invention may be used by applying it to the skin or hair after shaking it well.

Next, examples of the present invention will be described with comparative examples, but the present invention is not limited to the following examples.
The cosmetic compositions of Examples and Comparative Examples of the present invention were prepared with the compositions shown in Table 1.
Specifically, it was prepared by dissolving the oil phase components and then adding them to water. The state after preparation is also shown in Table 1.

The prepared cosmetic compositions of Example 1 and Comparative Example 1 were stored at 0 ° C. and 50 ° C. for 1 month, and then quantification of retinol palmitate was performed by HPLC. The results are shown in Table 1. From Table 1, it is clear that Comparative Example 1 has a higher quantitative value than Example 1 and the decrease in retinol palmitate is suppressed.
Therefore, it can be seen that deterioration of the oil agent can be prevented by allowing the oil phase to exist in the aqueous phase in a spherical shape.

Further, in Example 2, the olive oil used for the upper oil phase was used in Comparative Example 1, but it became spherical in the aqueous phase by being compatible with triglyceryl (caprylic acid / capric acid / succinic acid). I was able to make it exist.

Claims (2)

Contains triglyceryl (caprylic acid / capric acid / succinic acid) as an active ingredient of an antioxidant for retinol palmitate, and contains retinol palmitate compatible with (caprylic acid / capric acid / succinic acid) triglyceryl. A cosmetic composition containing an oil phase and an aqueous phase and suspending the oil phase in a spherical shape in the aqueous phase without containing a surfactant (however, (Acrylate / alkyl acrylate (acrylate / alkyl acrylate) ( C10-30)) Cosmetic compositions containing cross-polymers are excluded). The cosmetic composition according to claim 1, wherein the retinol palmitate is in a proportion of 0.01 to 30% by mass with respect to triglyceryl (caprylic acid / capric acid / succinic acid).