KR102569047B1 - Cosmetic composition containing high concentration of vitamin c - Google Patents

Abstract

The present invention contains at least 15% by weight of vitamin C and/or its derivatives, a nonionic surfactant, and a silicone emollient based on the total weight of the composition, so that a high content of vitamin C is stably contained, resulting in excellent feeling of use and skin improvement effect. And it provides a cosmetic composition with formulation stability.

Description

Cosmetic composition containing high content of vitamin C {COSMETIC COMPOSITION CONTAINING HIGH CONCENTRATION OF VITAMIN C}

The present invention relates to a cosmetic composition containing a high content of vitamin C.

Vitamin C (Ascorbic acid) has various skin-improving effects such as antioxidant effect, whitening effect, wrinkle improvement effect, and attempts to utilize vitamin C in the field of cosmetic compositions are continuing. In particular, vitamin C can improve problems such as pigmentation by suppressing the production of melanin, so it is highly utilized as a component of cosmetic compositions for whitening. However, vitamin C has low stability in cosmetic compositions, There was a problem of discoloration and oxidation.

Accordingly, various attempts have been made to stabilize vitamin C in cosmetic compositions. For example, a method of stabilizing vitamin C in a cosmetic composition by capturing vitamin C in a capsule or liposome or adding an additive such as bergenin together is known.

For example, Korean Patent Publication No. 10-2001-0109580 discloses a cosmetic composition containing vitamin capsules formed by mixing vitamins with porous powder. In addition, Korean Patent Registration No. 10-0685647 discloses that vitamin C or vitamin C derivatives are stabilized by including bergenin as an active ingredient.

However, as disclosed in the registered patent, in the case of a capsule form, a capsule containing vitamin C must be separately prepared, and then a manufacturing process of mixing it with other components of the cosmetic composition must be performed, and the capsule containing vitamin C must be prepared. In order to uniformly disperse and stabilize in the cosmetic composition, a separate additive or treatment is required, so the manufacturing process of the cosmetic composition is complicated and the cost is increased.

In addition, as disclosed in the registered patent, when vitamin C is stabilized with ingredients such as bergenin, there is a problem in that the content of vitamin C in the cosmetic composition is limited.

Therefore, there is a need to develop a cosmetic composition in which vitamin C is stabilized at a high content in the cosmetic composition without a complicated process of collecting vitamin C.

Republic of Korea Patent Publication No. 10-2001-0109580 Republic of Korea Patent No. 10-0685647

An object of the present invention is to provide a cosmetic composition that contains vitamin C as it is, but has excellent stability while containing vitamin C in a high content of at least 15% by weight or more.

The object of the present invention is not limited to the technical problem as described above, and another technical problem may be derived from the following description.

In order to achieve the above object, the present invention includes vitamin C and / or a derivative thereof, a nonionic surfactant and a silicone emollient, but at least 15% by weight or more of the vitamin C and / or a derivative thereof based on the total weight of the composition To provide a cosmetic composition containing a high content of vitamin C.

The cosmetic composition may include 15 to 50% by weight of the vitamin C and/or its derivative, 0.5 to 7% by weight of the nonionic surfactant, and 32 to 48% by weight of the silicone emollient based on the total weight of the cosmetic composition.

The nonionic surfactant may include polyglyceryl-3 polydimethylsiloxyethyl dimethicone.

The silicone emollient may include at least one selected from the group consisting of dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane.

The cosmetic composition is from the group consisting of softening lotion, nutrient lotion, astringent lotion, toner, lotion, essence, serum, cream, massage cream, pack, makeup base, BB cream, foundation, powder, cleansing foam, cleansing cream and cleansing water It may be one selected formulation.

The cosmetic composition of the present invention may stably contain a high content of vitamin C and/or a vitamin C derivative. Accordingly, the cosmetic composition of the present invention has excellent skin improvement effects such as whitening effect, antioxidant effect, and wrinkle improvement effect by high content of vitamin C and / or vitamin C derivatives, while formulation stability and feeling of use can be remarkably excellent.

In particular, the cosmetic composition of the present invention does not encapsulate and contain vitamin C and/or vitamin C derivatives in capsules or liposomes, but contains vitamin C and/or vitamin C derivatives themselves in a high content, so the skin improvement effect is excellent. can do. In addition, the cosmetic composition of the present invention can stably contain vitamin C and / or vitamin C derivatives even under various temperature conditions of low temperature, room temperature, and high temperature, so that excellent formulation stability and feeling of use can be implemented.

Hereinafter, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein.

Terms or words used in the specification and claims of the present invention are not limited to the usual or dictionary meaning, and the inventor can properly define the concept of the term in order to explain his/her invention in the best way. Based on the principle, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Throughout the specification of the present invention, when a part "includes" a certain component, it means that it may further include other components, not excluding other components unless otherwise stated. .

Throughout the specification of the present invention, "A and/or B" means A or B, or A and B.

Although the present invention has been specifically described below, the present invention is not limited thereto.

The present invention provides a cosmetic composition containing a high content of vitamin C.

In one embodiment of the present invention, vitamin C and / or derivatives thereof, nonionic surfactants and silicone emollients are included, but the vitamin C and / or derivatives thereof are contained in a high content of at least 15% by weight or more based on the total weight of the composition , It provides a cosmetic composition. Specifically, the cosmetic composition of this embodiment may be in the form of a water in silicone (W/S) type emulsion, but is not limited thereto, and may be formed in the form of any known cosmetic composition containing the above components.

The cosmetic composition of this embodiment may stably contain a high content of vitamin C and/or a vitamin C derivative. Accordingly, the cosmetic composition of the present embodiment stably contains a high content of vitamin C and/or a vitamin C derivative while having excellent whitening effect, antioxidant effect, wrinkle improvement effect, etc. by the high content of vitamin C and/or vitamin C derivative. As a result, the stability of the formulation and the feeling of use can be significantly improved.

Hereinafter, the components of the cosmetic composition of this embodiment will be described in detail.

The cosmetic composition of this embodiment includes vitamin C and/or a vitamin C derivative.

The cosmetic composition of this embodiment includes vitamin C and/or a vitamin C derivative, but may contain at least 15% by weight or more, specifically 20% by weight or more. By including the vitamin C and/or the vitamin C derivative, the cosmetic composition of this embodiment may realize excellent whitening effect, antioxidant effect, wrinkle improvement effect, etc., but is not limited thereto.

The vitamin C derivative is 3-O-Ethyl Ascorbic Acid, ascorbyl glucoside, sodium ascorbylphosphate (SAP), magnesium ascorbylphosphate ( magnesium ascorbylphosphate (MAP), calcium ascorbylphosphate, ascorbic acid polypeptide, ethyl ascorbyl ether, ascorbyl stearate, ascorbyl ethyl At least one selected from the group consisting of ascorbyl ethylsilanol pectinate, ascorbyl tetraisopalmitate, ascorbyl dipalmitate and ascorbyl palmitate It may include, but is not limited to.

The cosmetic composition of this embodiment may contain 15 to 50% by weight, specifically 20 to 45% by weight, more specifically 20 to 30% by weight of the vitamin C and/or vitamin C derivative based on the total weight of the cosmetic composition. can

The cosmetic composition of this embodiment includes vitamin C and / or vitamin C derivatives, but when included in 15 to 50% by weight based on the total weight, by stably containing a high content of vitamin C and / or vitamin C derivatives, excellent Feeling of use, skin improvement effect, and formulation stability can be realized. In particular, when the cosmetic composition of this embodiment contains 20 to 30% by weight of vitamin C and/or vitamin C derivatives based on the total weight, the above effect can be significantly improved.

If the cosmetic composition of the present embodiment contains less than 15% by weight of the vitamin C and/or vitamin C derivative, vitamin C is greater than the case of containing 15 to 50% by weight of the vitamin C and/or vitamin C derivative. And / or the degree of improvement of the skin improvement effect by the vitamin C derivative may be insignificant. On the other hand, when the cosmetic composition of this embodiment contains more than 50% by weight of the vitamin C and/or vitamin C derivative, the cosmetic composition contains 15 to 50% by weight of the vitamin C and/or vitamin C derivative. The stability of vitamin C and/or vitamin C derivatives in

The cosmetic composition of this embodiment includes a nonionic surfactant.

The cosmetic composition of this embodiment includes a nonionic surfactant, and in particular, the nonionic surfactant may include polyglyceryl-3 polydimethylsiloxyethyl dimethicone.

The cosmetic composition of this embodiment includes polyglyceryl-3 polydimethylsiloxyethyl dimethicone as a nonionic surfactant, unlike the case of including other types of nonionic surfactants, While stably containing a high content of vitamin C and / or vitamin C derivatives, the feeling of use, skin improvement effect, and formulation stability may be excellent.

The cosmetic composition of this embodiment may include 0.5 to 7% by weight, specifically 1 to 5% by weight, more specifically 1.5 to 3% by weight of the nonionic surfactant based on the total weight of the cosmetic composition.

When the cosmetic composition of this embodiment includes a nonionic surfactant, but contains 0.5 to 7% by weight based on the total weight, it stably contains a high content of vitamin C and / or vitamin C derivatives, thereby providing excellent feeling of use and skin improvement effect and formulation stability can be realized. In particular, when the cosmetic composition of this embodiment includes 1.5 to 3% by weight of the nonionic surfactant based on the total weight, the above effect can be remarkably improved.

If the cosmetic composition of this embodiment contains less than 0.5% by weight of the nonionic surfactant, the stability of vitamin C and/or vitamin C derivatives is higher than that of 0.5 to 7% by weight of the nonionic surfactant. Due to this difficulty, the feeling of use, skin improvement effect, and formulation stability may not be formed at an appropriate level. On the other hand, when the cosmetic composition of this embodiment contains the nonionic surfactant in an amount greater than 7% by weight, vitamin C and/or vitamin C derivatives are more stable than in the case where the nonionic surfactant is included in an amount of 0.5 to 7% by weight. Due to this difficulty, the feeling of use, skin improvement effect, and formulation stability may not be formed at an appropriate level.

The cosmetic composition of this embodiment includes a silicone emollient.

The cosmetic composition of the present embodiment includes a silicone emollient, and in particular, by including a high amount of the silicone emollient, it can stably contain a high content of vitamin C and/or a vitamin C derivative.

The silicone emollient of this embodiment may include at least one selected from the group consisting of dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane.

Specifically, the silicone emollient of this embodiment may include both dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane. In this case, the cosmetic composition of this embodiment It is possible to implement an improved feeling of use while stably containing a high content of vitamin C and/or a vitamin C derivative.

More specifically, the silicone emollient of this embodiment includes both dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane, but dimethicone/vinyl dimethicone crosspolymer (Dimethicone/Vinyl Dimethicone Crosspolymer) and cyclohexasiloxane (Cyclohexasiloxane) may be included in a weight ratio of 1: 0.5 to 4. In this case, the cosmetic composition of this embodiment contains a high content of vitamin C and/or a vitamin C derivative. It can be stably contained while providing an excellent feeling of use.

Most specifically, the silicone emollient of this embodiment may include dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane in a weight ratio of 1:2.5 to 3.5, which In this case, the cosmetic composition of this embodiment can stably contain a high content of vitamin C and/or a vitamin C derivative, while providing a remarkably excellent feeling of use.

The cosmetic composition of this embodiment contains 32 to 48% by weight, specifically 35 to 45% by weight, more specifically 38 to 42% by weight, most specifically 40% by weight of the silicone emollient based on the total weight of the cosmetic composition can include

When the cosmetic composition of the present embodiment includes the silicone emollient, but contains 32 to 48% by weight of the silicone emollient based on the total weight, it stably contains a high content of vitamin C and / or vitamin C derivatives, thereby providing excellent feeling of use and skin Improvement effect and formulation stability can be realized. In particular, when the cosmetic composition of this embodiment contains 38 to 42% by weight of the silicone emollient based on the total weight, the above effect can be remarkably improved.

If the cosmetic composition of this embodiment contains less than 32% by weight of the silicone emollient based on the total weight, the feeling of use of the cosmetic composition may be lowered than when the cosmetic composition contains 32 to 48% by weight of the silicone emollient. On the other hand, when the cosmetic composition of the present embodiment contains more than 48% by weight of the silicone emollient based on the total weight, vitamin C and / or vitamin C derivatives in the cosmetic composition The stability of the product is reduced, and the feeling of use, skin improvement effect, and formulation stability may not be formed at an appropriate level.

The cosmetic composition of this embodiment may further include excipients or additives necessary for formulation of each formulation in addition to the above components.

For example, the excipients or additives include surfactants, emulsifiers, emulsifiers, silicone polymers, pigments, colorants, fragrances, preservatives, bactericides, oxidation stabilizers, organic solvents, softeners, antioxidants, free radical destroyers, opacifiers, As a stabilizer, emollient, antifoam, moisturizer, vitamin, insect repellent, preservative, anti-inflammatory, filler, polymer, propellant, alkalizing agent, acidifying agent, colorant, thickening agent, skin conditioning agent, whitening agent, antioxidant, anti-wrinkle agent and solubilizing agent It may include one or more selected from the group consisting of, but is not limited thereto.

The cosmetic composition of this embodiment consists of softening lotion, nutrient lotion, astringent lotion, toner, lotion, essence, serum, cream, massage cream, pack, makeup base, BB cream, foundation, powder, cleansing foam, cleansing cream and cleansing water. It may be one formulation selected from the group, but is not limited thereto.

Hereinafter, the cosmetic composition containing a high content of vitamin C of the present invention will be described in detail through Examples, Comparative Examples, and Experimental Examples. Since these examples are intended to illustrate the present invention only, the scope of the present invention is not to be construed as being limited by these examples.

[Example]

Examples 1 to 4

By mixing the components of Table 1 [unit: weight%], a cosmetic composition in a cream formulation was prepared.

At this time, in Examples 1 to 4 of Table 1, the silicone emollient containing dimethicone/vinyldimethicone crosspolymer and cyclohexasiloxane were all included in a total of 40% by weight, and the ratios of the two components are shown in Table Same as 2 [unit: weight ratio].

[Comparative Example]

Comparative Examples 1 to 3

A cosmetic composition was prepared in the same manner as in Example 1, except that a nonionic surfactant other than polyglyceryl-3polydimethylsiloxyethyldimethicone was used.

At this time, those in Table 3 were used as other types of nonionic surfactants.

Comparative Examples 4 to 7

It was prepared in the same manner as in Example 1, except that the cosmetic composition was prepared according to the composition of Table 4 [unit: weight%].

Specifically, Comparative Examples 4 to 7 are the same as Example 1 except for the contents of dimethicone/vinyldimethicone crosspolymer and silicone emollient including cyclohexasiloxane and water.

[Experimental example]

Experimental Example 1: Evaluation results according to the type of nonionic surfactant

Using the cosmetic compositions of Examples 1 to 4 and Comparative Examples 1 to 3, formulation stability according to hardness and temperature was evaluated, and the results are shown in Table 5 below.

Specifically, the hardness was measured at 2cmΦ, 15mm, and 30cm/min using a RHEO METER hardness tester.

In addition, for formulation stability by temperature, when the sample (sample) was left at each temperature for up to 3 months and layer separation occurred, it was marked with 'X', when it was unstable, it was marked with '△', and when it was stable, it was marked with '○'. did

At this time, the unstable case (Δ) means a case where layer separation does not occur clearly, but little by little oil separation in the formulation is observed with the naked eye.

Referring to Table 5, according to this embodiment, when polyglyceryl-3 polydimethylsiloxyethyl dimethicone is included as a nonionic surfactant, an emulsified cosmetic composition is formed at a temperature of 5 to 50 ° C. It can be confirmed that a stable formulation is maintained without precipitation of vitamin C and/or vitamin C derivatives even when left in the range for a long time.

That is, it means that only when polyglyceryl-3 polydimethylsiloxyethyl dimethicone is included as a nonionic surfactant, a cosmetic composition stably containing a high content of vitamin C can be provided.

On the other hand, in the case of Comparative Examples 1 to 3, it was formed into a formulation such as skin or essence in a thinner state than cream, and hardness measurement was impossible.

Hereinafter, evaluation was conducted on the feeling of use and vitamin C stabilization performance using the cosmetic compositions of Examples 1 to 4 and Comparative Examples 4 to 7, and Comparative Example 1, in which emulsification was not properly performed in Experiment 1, and In the case of Comparative Examples 2 to 3 in which layer separation occurred, there was a difficulty in the additional experiment itself, and the following experiments were conducted except for Comparative Examples 1 to 3.

Experimental Example 2: Results of evaluation of the feeling of use according to the content of the silicone emollient in the cosmetic composition

Targeting a group of 10 adult women (age: 20s to 30s) with similar skin conditions, the cosmetic composition of Example 1 was applied to the skin, and the result of evaluating the feeling of use was evaluated by a 5-point method, Their average scores are shown in Table 6 [unit: score].

Specifically, an experiment was conducted on the stickiness and spreadability items, and the closer the score is to 5, the less stickiness and the better the spreadability.

At this time, in the case of stickiness, the cosmetic composition is applied to the skin and absorbed, and after a certain amount of time (all the same), the same number of pieces of paper are sprayed on the skin, the degree of sticking is observed, and the result is scored showed up

In the same manner as above, Table 6 shows the evaluation results of the feeling of use of Examples 2 to 4 and Comparative Examples 4 to 7.

Looking at Table 6, it can be seen that according to the present embodiment, a remarkably excellent feeling of use is realized while containing a high content of vitamin C and / or vitamin C.

In particular, in Examples 1 to 3, the silicone emollient of Example 1 containing Dimethicone/Vinyl Dimethicone Crosspolymer and Cyclohexasiloxane in a weight ratio of 1:3 In some cases, it can be seen that the feeling of use is more excellent.

On the other hand, in the case of Comparative Examples 4 to 7 containing less than 32% by weight or more than 48% by weight of the silicone emollient based on the total weight of the cosmetic composition, it can be seen that stickiness and spreadability are reduced.

Experimental Example 3: Vitamin C stability evaluation result according to the content of silicone emollient in cosmetic composition

(1) Evaluation of vitamin C activity by temperature

In the cosmetic compositions of Examples 1 to 4 and Comparative Examples 4 to 7, the vitamin C titer was evaluated, and the results are shown in Table 7.

At this time, the titer was evaluated by measuring the vitamin C content using an HPLC analysis device.

Referring to Table 7, in the case of this embodiment, vitamin C and / or vitamin C derivatives are stably contained, but in the case of Comparative Example 7 containing more than 48% by weight of the silicone emollient based on the total weight of the cosmetic composition, vitamin As C and/or vitamin C derivatives are precipitated, it can be seen that the stability is greatly reduced.

On the other hand, in Comparative Examples 4, 5, and 6 containing less than 32% by weight of silicone emollient based on the total weight of the cosmetic composition, the water content is relatively high, so the solubility of vitamin C is improved, but the oxidation rate of vitamin C is increased. , it is considered that the stability is lower than that of Examples 1 to 3.

(2) Evaluation of vitamin C precipitation by temperature

While the cosmetic compositions of Examples 1 and 4 and Comparative Examples 4 to 7 were left at 5 ° C, 25 ° C, and 50 ° C for a certain period of time, the precipitation state of vitamin C was observed, and the results were summarized in Table 8. showed up

At this time, in Table 8, when vitamin C was not precipitated, it was marked as 'X', when a small amount of vitamin C was precipitated, it was marked as '△', and when vitamin C was excessively precipitated, it was marked as '○'.

Referring to Table 8, in a state in which vitamin C and/or vitamin C derivatives are equally included at 20% by weight in the cosmetic composition, in the case of the present embodiment, vitamin C and/or vitamin C derivatives are stably stabilized in the cosmetic composition. On the other hand, in the case of Comparative Example 7 not according to this Example, vitamin C and / or vitamin C derivatives are precipitated at low temperature, room temperature and high temperature, and it can be confirmed that the stability is greatly reduced.

On the other hand, in the case of Comparative Examples 4, 5, and 6 containing less than 32% by weight of silicone emollient based on the total weight of the cosmetic composition, the water content is relatively high, so that the solubility of vitamin C is improved, and excessive precipitation does not occur. It is presumed that it is not

In view of the above, the cosmetic composition of this embodiment includes polyglyceryl-3 polydimethylsiloxyethyl dimethicone as a nonionic surfactant, and silicone in which specific ingredients are combined. By including the emollient in a specific amount, a high content of vitamin C and/or a vitamin C derivative can be stably contained, so that the feeling of use, skin improvement effect, and formulation stability can be simultaneously improved.

As described above, the description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains can easily be modified into other specific forms without changing the technical spirit or essential features of the present invention. You will understand. Therefore, the embodiments described above are illustrative in all respects, and should be understood as non-limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be construed as being included in the scope of the present invention. do.

Claims (5)

vitamin C or a derivative thereof;
nonionic surfactants; and
Including; silicone emollient;
A cosmetic composition containing vitamin C, characterized in that it comprises 15 to 50% by weight of the vitamin C or its derivative and 32 to 48% by weight of the silicone emollient based on the total weight of the composition,
The nonionic surfactant is
Contains polyglyceryl-3 polydimethylsiloxyethyl dimethicone,
The silicone emollient is
A cosmetic composition containing vitamin C, comprising dimethicone/vinyl dimethicone crosspolymer and cyclohexasiloxane in a weight ratio of 1:2.5 to 3.5.
According to claim 1,
The cosmetic composition
Cosmetic composition containing vitamin C, characterized in that it comprises 0.5 to 7% by weight of the nonionic surfactant based on the total weight of the cosmetic composition.
delete delete According to claim 1,
The cosmetic composition
One formulation selected from the group consisting of softening lotion, nourishing lotion, astringent lotion, toner, lotion, essence, serum, cream, massage cream, pack, makeup base, BB cream, foundation, powder, cleansing foam, cleansing cream and cleansing water Characterized in that, a cosmetic composition containing vitamin C.