WO2019098805A2 - Uv-light blocking cosmetic composition comprising polyglyceryl based emulsifier and sorbitan emulsifier - Google Patents

Abstract

The present invention relates to a cosmetic composition for blocking UV-light, said composition comprising an oil, an emulsifier, an inorganic UV-light blocker, and an aqueous phase, wherein the emulsifier comprises a polyglyceryl based emulsifier and a sorbitan emulsifier. The UV-light blocking effect is excellent, but even so there is no skin irritation and the formulation stability is excellent.

Description

A cosmetic composition for ultraviolet ray shielding comprising a polyglyceryl type emulsifier and a sorbitan type emulsifier

Disclosed herein is a cosmetic composition for protecting against UV rays, which comprises an oil, an emulsifier, an inorganic ultraviolet screening agent and a water-absorbing agent, wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier.

Recently, as concerns about the safety of chemicals have increased in various industrial fields such as food and sanitary products, many attempts have been made to exclude components which are threatened to skin or human health even in cosmetics.

In particular, in the case of sunscreen agents intended for adult customers with sensitive skin, infants, and children, a number of inks for water-in-UV sunscreen containing only inorganic sunscreen agents have been developed to prevent skin irritation of organic sunscreen agents. Many emulsifiers (PEG emulsifiers) with PEG groups having excellent emulsifying power and dispersing ability were used in order to improve dispersibility and emulsification stability of the blocking component.

However, there has been developed a product which excludes the PEG-based emulsifier while generating a problem about stability. However, the negative feeling such as dullness and opacity is dominant, the stability of formulation is remarkably decreased, and the oil Or the wax for the purpose of precipitation is precipitated.

Therefore, it is necessary to study a cosmetic composition which is improved in feeling and stability against formulation while excluding the PEG-based emulsifier.

In one aspect, the object of the present invention is to provide a cosmetic composition comprising a polyglyceryl-based emulsifier and a sorbitan-based emulsifier, which is excellent in feeling of use without containing a PEG-based emulsifier and excellent in formulation stability.

In another aspect, the object of the present invention is to provide a cosmetic composition which contains an inorganic UV-blocking agent and is excellent in ultraviolet ray shielding effect even when there is no irritation to the skin.

In one aspect, the present invention provides a cosmetic composition for protecting against ultraviolet rays, which comprises an oil, an emulsifier, an inorganic ultraviolet screening agent and a water-absorbing agent, wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier.

In one aspect, the cosmetic composition for UV screening of the present invention contains a polyglyceryl-based emulsifier and a sorbitan-based emulsifier and is excellent in feeling of use and excellent in formulation stability without containing a PEG-based emulsifier. In addition, it contains an inorganic sunscreen agent as an ultraviolet screening agent, so that it has excellent ultraviolet screening effect even when there is no irritation to the skin.

1A and 1B are photographs showing the precipitation stability of the cosmetic composition according to Example 1 and Comparative Example 1 of the present invention.

2A and 2B are photographs showing the formulation stability of the cosmetic composition according to Example 1 and Comparative Example 6 of the present invention.

Term Definition

In this specification, when a part is referred to as " including " an element, it is to be understood that it may include other elements as well, without departing from the other elements unless specifically stated otherwise.

DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS

Hereinafter, the present invention will be described in detail.

In exemplary embodiments of the present invention, the present invention is a cosmetic composition for protecting against ultraviolet rays, which comprises an oil, an emulsifier, an inorganic ultraviolet screening agent and a water pearl portion, wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier .

Unlike inorganic sunscreen agents, which generally prevent ultraviolet rays from penetrating into skin by physically scattering and reflecting ultraviolet rays, organic sunscreen agents prevent penetration of ultraviolet rays into the skin by chemical absorption action.

Therefore, the cosmetic composition of the present invention can be used safely and safely for skin of infants who are weak in stimulation, sensitive skin, and skin after dermatological treatment, in addition to an organic ultraviolet screening agent which can show stimulation or toxicity to the skin by chemical action I can do it.

However, when the inorganic ultraviolet screening agent is included, there is a problem in stability of formulation such as a feeling of use or precipitation of oil or wax during the manufacturing process. To solve this problem, a PEG type emulsifier has been mainly used. However, There has been a concern that components such as 1,4-dioxane produced as a dispersion in the synthesis process may not be properly removed.

Therefore, the present inventors have found that a cosmetic composition containing an inorganic ultraviolet screening agent free from irritation to the skin, but also a polyglyceryl type emulsifying agent and a sorbitan type emulsifying agent together without using a conventionally used PEG type emulsifying agent, An inventive cosmetic composition for an ultraviolet screening having excellent effects has been invented.

In one embodiment, the polyglyceryl-based emulsifier is selected from the group consisting of polyglyceryl-2 dipolyhydroxy stearate, lauryl polyglyceryl-3 polydimethylsiloxy ethyldecethicone, diisostearoyl polyglyceryl-3 Polyglyceryl-3 diisostearate, polyglyceryl-2 diisostearate, polyglyceryl-4 diisostearate / holihydroxystearate / sebacate, polyglyceryl-2 triisostearate, polyglyceryl- Isostearate and polyglyceryl-3 polydimethylsiloxy ethylidene stearate and polyglyceryl-3 polydimethylsiloxy ethylidene stearate.

The sorbent-based emulsifier may be selected from the group consisting of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan sesquioleate and sorbitan isostearate. And may be sorbitan isostearate, preferably sorbitan isostearate.

Particularly, the polyglyceryl-based emulsifier has a bulky structure, while the sorbitan-based emulsifier has a linear structure. Therefore, at least one polyglyceryl-based emulsifier having a different structure and at least one sorbitan-based emulsifier having a linear structure , A cosmetic composition having excellent formulation stability and excellent dispersibility at a high temperature can be produced.

In one embodiment, the total emulsifier content may be from 1 to 20% by weight, such as from 2 to 19% by weight, from 3 to 18% by weight, from 4 to 17% by weight, 16% by weight, 6 to 15% by weight, 7 to 14% by weight or 8 to 13% by weight. When the content of the emulsifier is less than 1% by weight, it is difficult to secure the stability of the formulation such as precipitation of waxes or separation of water according to the passage of time after the preparation of the cosmetic composition. When the content is more than 20% by weight, .

In one embodiment, the oil is selected from the group consisting of C12-15 alkyl benzoate, coco-caprylate / caprate, dicaprylyl ether, cocoglyceride, methyltrimethicone, butylene glycol dicaprylate / Rik / capric triglyceride, and the oil content may be 10 to 40 wt%, for example, 11 to 35 wt% based on the total weight of the cosmetic composition, 12 to 30% by weight, or 13 to 25% by weight. If the content of the oil is less than 10% by weight, a feeling of use may be intense. If the content of the oil is more than 40% by weight, shine may occur during application of the skin.

In one embodiment, the inorganic ultraviolet screening agent may be at least one selected from the group consisting of titanium dioxide, zinc oxide, and iron oxide, and the content of the inorganic ultraviolet screening agent may be 10 to 40% by weight based on the total weight of the cosmetic composition , Such as 11 to 35 wt%, 12 to 30 wt%, or 13 to 25 wt%. If the content of the inorganic ultraviolet screening agent is less than 10% by weight, the ultraviolet ray shielding effect may be insufficient. If the content is more than 40% by weight, the feeling of use and the stability of the formulation may be deteriorated.

In one embodiment, the water-pervious portion may include at least one member selected from the group consisting of water, hydrogen chloride, butylene glycol, ethylhexyl glycerin, and glyceryl caprylate, and the water content may be the total weight of the cosmetic composition And can be, for example, from 23 to 47% by weight, from 26 to 44% by weight, or from 30 to 40% by weight. If the water content is less than 20% by weight, the oil may cause shine and sticky feeling, and the dispersibility may be deteriorated. If the water content is more than 50% by weight, separation between the oil phase and the water phase may occur.

In one embodiment, the cosmetic composition may further comprise one or more of powders, waxes, and inorganic thickening agents.

In one embodiment, the powder is for the feeling of use of the cosmetic composition for blocking ultraviolet rays, and is in the group consisting of silica, vinyl dimethicone / methicone silsesquioxane crosspolymer, polymethylsilsesquioxane and polymethyl methacrylate It can be one or more selected. The content of the powder may be 1 to 10 wt%, for example, 1.5 to 9 wt%, 2 to 8 wt%, 2.5 to 7 wt%, or 3 to 6.5 wt% based on the total weight of the cosmetic composition . The powder can prevent the precipitation phenomenon in the formulation while softening the feeling of use of the cosmetic composition within the above-mentioned content.

In one embodiment, the wax may be at least one selected from hydrogenated vegetable oil, trihydroxy stearine, and the wax content may be from 0.5 to 5% by weight, based on the total weight of the cosmetic composition, 1 to 4.5 wt%, 1.5 to 4 wt%, or 2 to 3.5 wt%. The wax can prevent the precipitation phenomenon in the formulation while softening the feeling within the content.

In one embodiment, the inorganic thickener may be a hectorite inorganic thickener, preferably disteardimonium hectorite, wherein the content of inorganic thickener is in the range of from 0.5 to 5 And can be, for example, 1 to 4.5 wt%, 1.5 to 4 wt%, or 2 to 3.5 wt%. The inorganic thickening agent may prevent precipitation of wax within the above content, but may not interfere with feeling of use.

In one embodiment, the ultraviolet barrier cosmetic composition may be in a water-in-oil type. Therefore, the water component in the cosmetic composition for blocking ultraviolet rays is not evaporated, and the affinity with the skin is good.

In another exemplary embodiment of the present invention, the present invention provides a cosmetic composition comprising an oil, an emulsifier, an inorganic sunscreen agent, and a water-soluble part, wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier. It is a method of administering an effective amount to a subject in need or applying it to the skin to block ultraviolet rays.

In yet another exemplary embodiment of the present invention, the present invention provides a composition comprising an oil, an emulsifier, an inorganic sunscreen agent and a water-pervious part, wherein the emulsifier comprises a polyglyceryl-based emulsifier and a sorbitan- Purpose.

In another exemplary embodiment of the present invention, the present invention provides a cosmetic composition for cosmetics, which comprises an oil, an emulsifier, an inorganic ultraviolet screening agent and a water-poured part for producing cosmetics for blocking ultraviolet rays, wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier ≪ / RTI >

Hereinafter, the present invention will be described more specifically with reference to the following examples. However, the following embodiments are provided for illustrative purposes only in order to facilitate understanding of the present invention, and the scope and scope of the present invention are not limited thereto.

Example  - UV protection Cosmetics  Composition manufacturing

The cosmetic compositions of Examples 1 to 5 and Comparative Examples 1 to 8 were prepared by prescribing the following Tables 1 and 2.

	Raw material name	Comparative Example 1	Comparative Example 2	Comparative Example 3	Comparative Example 4	Comparative Example 5	Comparative Example 6	Example 1
oil	C12-15 Alkyl Benzoate	-	To 100	To 100	To 100	To 100	To 100	To 100
	Coco-Caprylate / Caprate	To 100	5.00	5.00	5.00	5.00	5.00	5.00
	Dicaprylyl Ether	5.00	5.00	5.00	5.00	5.00	5.00	5.00
	Cocoglycerides	3.00	-	-	-	-	-	-
	Methyl Trimethicone	-	3.00	3.00	3.00	3.00	3.00	3.00
	BUTYLENE GLYCOL DICAPRYLATE / DICAPRATE	-	3.00	3.00	3.00	3.00	3.00	3.00
	Caprylic / Capric Triglyceride *	13	12	12	12	12	12	12
Water-in-oil type emulsifier	Polyglyceryl-2 Dipolyhydroxystearate	2.00	2.00	2.50	3.50	2.00	-	1.00
	Lauryl polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone	-	1.00	2.50	3.50	-	-	1.00
	SORBITAN ISOSTEARATE	-	-	-	-	-	1.00	1.00
	DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE	-	-	-	-	5.00	5.00	5.00
	POLYGLYCERYL-4 DIISOSTEARATE / POLYHYDROXYSTEARATE / SEBACATE	-	-	-	-	-	1.00	1.00
Sunscreen	Titanium Dioxide	7.2	5.7	5.7	5.7	5.7	5.7	5.7
	Zinc Oxide	10.2	7.8	7.8	7.8	7.8	7.8	7.8
Powder	SILICA	2.00	2.00	2.00	2.00	2.00	2.00	2.00
	VINYL DIMETHICONE / METHICONE SILSESQUIOXANE CROSSPOLYMER	-	2.00	2.00	2.00	2.00	2.00	2.00
Wax	Hydrogenated Vegetable Oil	1.50	-	-	-	-	-	-
	Trihydroxystearin	0.50	-	-	-	-	-	-
Weapon Increaser	Disteardimonium Hectorite	-	1.80	1.80	1.80	1.80	1.80	1.80
Water top	WATER	34	30	30	30	30	30	30
	SODIUM CHLORIDE	1.00	1.00	1.00	1.00	1.00	1.00	1.00
	Butylene Glycol	9.00	5.00	5.00	5.00	5.00	5.00	5.00
	Ethylhexylglycerin		0.05	0.05	0.05	0.05	0.05	0.05
	Glyceryl Caprylate	0.10	0.10	0.10	0.10	0.10	0.10	0.10

	Raw material name	Example 2	Example 3	Example 4	Comparative Example 7	Example 5	Comparative Example 8
oil	C12-15 Alkyl Benzoate	To 100	To 100	To 100	To 100	To 100	To 100
	Coco-Caprylate / Caprate	5.00	5.00	5.00	5.00	5.00	5.00
	Dicaprylyl Ether	5.00	5.00	5.00	5.00	5.00	5.00
	Methyl Trimethicone	3.00	3.00	1.5	-	3.00	3.00
	BUTYLENE GLYCOL DICAPRYLATE / DICAPRATE	3.00	3.00	1.5	-	3.00	3.00
	Caprylic / Capric Triglyceride *	12	12	12	12	12	12
Water-in-oil type emulsifier	Polyglyceryl-2 Dipolyhydroxystearate	1.00	1.00	2.00	4.00	1.00	1.00
	Lauryl polyglyceryl-3 Polydimethylsiloxyethyl Dimethicone	1.00	1.00	2.00	4.00	1.00	1.00
	SORBITAN ISOSTEARATE	-	-	1.00	4.00	1.00	1.00
	SORBITAN STEARATE	1.00	-	-	-	-	-
	SORBITAN SESQUIOLEATE	-	1.00	-	-	-	-
	DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE	5.00	5.00	6.00	6.00	5.00	5.00
	POLYGLYCERYL-4 DIISOSTEARATE / POLYHYDROXYSTEARATE / SEBACATE	1.00	1.00	2.00	4.00	1.00	1.00
Sunscreen	Titanium Dioxide	5.7	5.7	5.7	5.7	5.7	5.7
	Zinc Oxide	7.8	7.8	7.8	7.8	7.8	7.8
Powder	SILICA	2.00	2.00	2.00	2.00	2.00	2.00
	VINYL DIMETHICONE / METHICONE SILSESQUIOXANE CROSSPOLYMER	2.00	2.00	2.00	2.00	2.00	2.00
Weapon Increaser	Disteardimonium Hectorite	1.80	1.80	1.80	1.80	2.5	6.0
Water top	WATER	30	30	30	30	30	30
	SODIUM CHLORIDE	1.00	1.00	1.00	1.00	1.00	1.00
	Butylene Glycol	5.00	5.00	5.00	5.00	5.00	5.00
	Ethylhexylglycerin	0.05	0.05	0.05	0.05	0.05	0.05
	Glyceryl Caprylate	0.10	0.10	0.10	0.10	0.10	0.10

Experimental Example  1 - Formulation stability observation

The dispersion stability and the formulation stability of the ultraviolet barrier cosmetic composition prepared in the above-described manner were observed, and the following charts are shown in Tables 3 and 4, and the photographs of the precipitation stability observed in Example 1 and Comparative Example 1 are shown in FIGS. 1A and 1B , Examples 1 and 6, and photographs showing emulsion stability were shown in Figs. 2A and 2B.

	Comparative Example 2	Comparative Example 3	Comparative Example 4	Comparative Example 5	Comparative Example 6	Example 1
Emulsion stability (acceleration)	Bad	Bad	Bad	Bad	Good	Good
High temperature stability (4 weeks)	Oil separation Dispersion failure	Oil separation Dispersion failure	Poor dispersion	Oil separation Dispersion failure	Poor dispersion	Good

	Example 2	Example 3	Example 4	Comparative Example 7	Example 6	Comparative Example 8
Stability	Good	Good	Good	Low Viscosity	Good	Poor dispersion

Table 3 and Table 4 show that the emulsification stability was not ensured when two types of emulsifiers were used (Comparative Examples 2 to 5), and the cycling shaking was performed for 3 days (-0 ° C to 45 ° C for 1 cycle / 24 Time, rotation at 150 rpm), the emulsion particles were broken and water was separated. DIISOSTEAROYL POLYGLYCERYL-3 DIMER DILINOLEATE emulsifier with bulky structure was used as the main surfactant and the auxiliary emulsifier with bulky structure and linear structure In case of using (Comparative Example 6), emulsion stability was secured, but the dispersibility at high temperature was lowered.

In the case of Example 1 in which four types of polyglyceryl type emulsifiers finally having different structures and a linear auxiliary emulsifier were additionally used, both the dispersibility at a high temperature and the emulsification stability were secured.

In addition, when other sorbitan based emulsifiers among the linear auxiliary emulsifiers were used, excellent effects in emulsion stability and high temperature dispersibility were confirmed (Examples 2 and 3). The emulsification stability and dispersibility of the polyglyceryl-based and sorbitan-based emulsifiers were 13% by weight (Example 4) and 22% by weight (Comparative Example 7) In Comparative Example 7, however, not only the viscosity of the contents was too low, but also it was difficult to achieve quality as a product due to stickiness and a feeling of use.

When the inorganic thickening agent was added in an amount of 2.5 wt% (Example 5), stability similar to that of Example 1 could be secured and feeling of use could be realized. However, when the content was used in an amount exceeding 5 wt% (Comparative Example 8) Dispersibility was impaired.

Therefore, the emulsifier content is preferably 1 to 20 wt% and the inorganic thickener content is 0.5 wt% to 5 wt% in order to provide a feeling of use and stability of the product.

Experimental Example 2 - Measurement of formulation stability and ultraviolet blocking effect

The formulation stability, the acceleration stability and the ultraviolet blocking effect at room temperature of the cosmetic composition according to Example 1 and Comparative Example 1 of the present invention were measured and are shown in Table 5 below.

		Comparative Example 1	Example 1
Room temperature (6 months)		Precipitation	No precipitation
Acceleration Stability (4 weeks)		Oil separation	Good
UV protection effect	SPF	32	45
	PA	++	++

When the ultraviolet blocking effect of Example 1, in which both the dispersibility and emulsifying qualities at high temperatures were secured, was compared with Comparative Example 1 to which the prior art was applied, the UVB blocking effect was increased and the PA, which is the UVA blocking effect, Could. Therefore, it was confirmed that the cosmetic composition for UV screening according to the present invention is superior in ultraviolet ray shielding effect to the conventional cosmetic composition for UV screening without using a PEG-based emulsifier.

Claims (16)

1. An oil, an emulsifier, an inorganic sunscreen agent and a water-

   Wherein the emulsifier comprises a polyglyceryl type emulsifier and a sorbitan type emulsifier.
2. The method according to claim 1,

   The polyglyceryl-based emulsifier may be at least one selected from the group consisting of polyglyceryl-2 dipolyhydroxy stearate, lauryl polyglyceryl-3 polydimethylsiloxyethyldecethicone, diisostearoyl polyglyceryl- Polyglyceryl-2 diisostearate, polyglyceryl-4 diisostearate / holihydroxystearate / sebacate, polyglyceryl-2 triisostearate, polyglyceryl-3 diisostearate, polyglyceryl- Glyceryl-3-polydimethylsiloxy, chlidymethicone, and the like.
3. The method according to claim 1,

   The sorbent-based emulsifier may be selected from the group consisting of sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan tristearate, sorbitan monooleate, sorbitan sesquioleate and sorbitan isostearate. Wherein the cosmetic composition comprises at least one cosmetic composition selected from the group consisting of cosmetics and cosmetics.
4. The method according to claim 1,

   Wherein the content of the emulsifier is 1 to 20% by weight based on the total weight of the cosmetic composition.
5. The method according to claim 1,

   The oil may be selected from the group consisting of C12-15 alkyl benzoate, coco-caprylate / caprate, dicaprylyl ether, cocoglyceride, methyltrimethicone, butylene glycol dicaprylate / dicaprate and caprylic / capric triglyceride Wherein the cosmetic composition comprises at least one selected from the group consisting of sunscreen, sunscreen, sunscreen, sunscreen, sunscreen, and seride.
6. The method according to claim 1,

   Wherein the content of the oil is 10 to 40% by weight based on the total weight of the cosmetic composition.
7. The method according to claim 1,

   Wherein the inorganic ultraviolet screening agent is at least one selected from the group consisting of titanium dioxide, zinc oxide, and iron oxide.
8. The method according to claim 1,

   Wherein the content of the inorganic ultraviolet screening agent is 10 to 40% by weight based on the total weight of the cosmetic composition.
9. The method according to claim 1,

   Wherein the water-soluble part comprises at least one member selected from the group consisting of water, hydrogen chloride, butylene glycol, ethylhexyl glycerin, and glyceryl caprylate.
10. The method according to claim 1,

    Wherein the water content of the cosmetic composition is 20 to 50% by weight based on the total weight of the cosmetic composition.
11. The method according to claim 1,

    Wherein the cosmetic composition further comprises at least one of powder, wax, and inorganic thickening agent.
12. 12. The method of claim 11,

    Wherein the content of the powder is 1 to 10% by weight based on the total weight of the cosmetic composition.
13. 12. The method of claim 11,

    Wherein the content of the wax is 0.5 to 5% by weight based on the total weight of the cosmetic composition.
14. 12. The method of claim 11,

    Wherein the inorganic thickening agent is a hectorite inorganic thickening agent.
15. 12. The method of claim 11,

    Wherein the content of the inorganic thickening agent is 0.5 to 5% by weight based on the total weight of the cosmetic composition.
16. The method according to claim 1,

    Wherein the UV-blocking cosmetic composition is a water-in-oil type.

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