COSMETIC COMPOSITION COMPRISING HYDROSOLUBLE UV FILTERS

Abstract

The present invention relates to a composition, particularly a cosmetic composition, comprising the following in a physiologically acceptable aqueous medium: at least one filter chosen from among hydrosoluble filters capable of absorbing UV from 320 to 400 nm (UVA), hydrosoluble filters capable of absorbing UV from 280 to 320 nm (UVB) and mixtures thereof. a first thickening agent chosen from among carrageenans; and at least one second thickening agent chosen from among synthetic anionic thickening polymers, branched carboxylated thickening polysaccharides and mixtures thereof.

Claims

1. A composition comprising, in a physiologically acceptable aqueous medium: at least one filter chosen from among hydrosoluble filters capable of absorbing UV from 320 to 400 nm (UVA), hydrosoluble filters capable of absorbing UV from 280 to 320 nm (UVB) and mixtures thereof; a first thickening agent chosen from among carrageenans; and at least one second thickening agent chosen from among synthetic anionic thickening polymers, branched carboxylated thickening polysaccharides and mixtures thereof.

2. The composition according to claim 1, wherein the hydrosoluble filter capable of absorbing UVA is chosen from among terephthalylidene dicamphor sulfonic acid, bis-benzoazolyl derivatives.

3. The composition according to claim 1, wherein the hydrosoluble filter capable of absorbing UVB is chosen from among PABA, glyceryl PABA, PEG-25 PABA, Phenylbenzimidazole Sulfonic acid, ferulic acid, salicylic acid, DEA methoxycinnamate, Benzylidene Camphor Sulfonic acid and Camphor Benzalkonium Methosulfate.

4. The composition according to claim 1, which comprises a total quantity of hydrosoluble filters equal to between 0.2% and 40% by weight.

5. The composition according to claim 1, which comprises at least one C1-C4 monoalkanol, and/or at least one polyol.

6. The composition according to claim 5 which comprises at least one C1-C4 monoalkanol, in a quantity varying from 0.2 to 90% by weight and/or at least one polyol in a quantity of at least 1% by weight relative to the total weight of the composition.

7. The composition according to claim 1 wherein the first thickening agent is a lambda type carrageenan.

8. The composition according to claim 1 wherein the concentration of carrageenans varies between 0.01 and 20% relative to the total weight of the composition.

9. The composition according to claim 1 wherein, the synthetic anionic thickening polymer is chosen from among cross-linked homopolymers of acrylic acid.

10. The composition according to claim 1 wherein the synthetic anionic thickening polymer is present as active material in a quantity varying from 0.05 to 40% by weight relative to the total weight of the composition.

11. The composition according to claim 1 wherein the branched carboxylated thickening polysaccaride is chosen from among anionic branched polysaccharides based on glucose, mannose, acetylated mannose, pyruvic acid and glucuronic acid.

12. The composition according to claim 1, wherein the branched carboxylated thickening polysaccharide is present as active material in a quantity varying from 0.01 to 20% by weight relative to the total weight of the composition.

13. The composition according to claim 1, which comprises at least one carrageenan, and at least one second thickening agent chosen from among cross-linked homopolymers of acrylic acid, xanthan gum and mixtures thereof.

14. The composition according to claim 1, which comprises at least one carrageenan, at least one cross-linked homopolymer of acrylic acid and at least one xanthan gum.

15. The composition according to claim 1, which comprises less than 5% by weight of an oily phase, in weight of the total weight of the composition and/or it comprises less than 5% by weight of oil soluble UV filters, in weight of the total weight of the composition.

16. The composition according to claim 2, wherein the hydrosoluble filter capable of absorbing UVB is chosen from among PABA, glyceryl PABA, PEG-25 PABA, Phenylbenzimidazole Sulfonic acid, ferulic acid, salicylic acid, DEA methoxycinnamate, Benzylidene Camphor Sulfonic acid and Camphor Benzalkonium Methosulfate.

17. The composition according to claim 2, which comprises a total quantity of hydrosoluble filters equal to between 0.2% and 40% by weight.

18. The composition according to claim 3, which comprises a total quantity of hydrosoluble filters equal to between 0.2% and 40% by weight.

19. The composition according to claim 2, which comprises at least one C1-C4 monoalkanol and/or at least one polyol.

20. The composition according to claim 3, which comprises at least one C1-C4 monoalkanol and/or at least one polyol.

Description

EXAMPLE 1

Preparation and Evaluation of Compositions According to the Invention and Comparative Compositions

[0132] Compositions A to D in Table 1 below were prepared as follows. Compositions B and D are compositions according to the invention. Compositions A and C are comparative composition. Comparative compositions are different from compositions according to the invention by the nature of the thickening agent:

[0133] Comparative composition A contains only a carbomer as thickening agent.

[0134] Comparative composition C comprises xanthan gum and a carbomer.

[0135] In the following tables, the expression “m.a.” means “active material”.

[0136] Preparation of Compositions

[0137] Preservation agents and water are mixed in a beaker.

[0138] Ingredients of the “aqueous filter phase”, namely water, hydrosoluble UV filters, TEA and tromethamine, are mixed while stirring a clear mixture. Once this filter phase is ready, the preservation agents and water are added into the mixture.

[0139] The carbomer (when it is present) is dissolved in water under a deflocculator (at about 600 rpm). Once it has been dissolved, it is neutralized using TEA. Xanthan gum (when it is present) is added, then wait for it to stabilize. Similarly, the carrageenan (when it is present) is added, then wait for it to stabilize.

[0140] The viscosity and turbidity of compositions are evaluated as described in the description.

[0141] The results are given in Table 1.

TABLE-US-00001 TABLE 1 A B C D (comparative) (invention) (comparative) (invention) Gel Water Qs 100 phase Preservatives QS CARBOMER 0.5 0.5 0.5 0.5 (carbopol 980) Triethanolamine 0.7 0.7 0.7 0.7 (TEA) Xanthan gum — — 0.5 0.5 (KELTROL CG-T CP KELCO) CARRAGEENAN — 0.3 — 0.3 (SATIAGUM VPC 410 CARGILL) Aqueous Water 15 15 15 15 filter Phenylbenzimidazole 8 8 8 8 phase Sulfonic Acid (Eusolex 232 made by Merck) Terephthalylidene 10 10 10 10 Dicamphor (3.3% m.a.) (3.3% m.a.) (3.3% m.a.) (3.3% m.a.) Sulfonic Acid (Mexoryl SX made by Chimex; 33% in m.a.) TEA 2.5 2.5 2.5 2.5 Tromethamine 3.5 3.5 3.5 3.5 Viscosity 130 115 407 558 (in centipoises) Turbidity 90 60 92 52 (in NTU)

[0142] The results show that:

[0143] with comparative formula A: the formula has a certain viscosity but no turbidity of less than 80 NTU;

[0144] with the formula according to the invention B: the formula has a certain viscosity and is transparent;

[0145] with comparative formula C: the formula has a certain viscosity but no turbidity of less than 80 NTU; and

[0146] with the formula according to the invention D: the formula is transparent and has no loss of viscosity.

[0147] In conclusion, it is found that the formulas according to the invention B and D are the formulas that have the most useful viscosities, while remaining transparent (low turbidities).

EXAMPLE 2

Evaluation of the Transparency of a Composition According to the Invention

[0148] The composition F1 in Table 2 below was prepared as indicated in example 1. Formula F1 includes the association of thickening agents according to the invention.

[0149] The viscosity and turbidity of the composition are evaluated as described in the description. The results are given in Table 2.

TABLE-US-00002 TABLE 2 Formula F1 (invention) Gel phase Water 59.5 Preservatives 0.5 CARBOMER 0.5 (carbopol 980) Triethanolamine (TEA) 0.7 Xanthan gum 0.3 (KELTROL CG-T CP KELCO) CARRAGEENAN 0.5 (SATIAGUM VPC 410 CARGILL) Aqueous Water 15 filter Terephthalylidene 10 phase Dicamphor (3.3% m.a.) Sulfonic Acid (Mexoryl SX made by Chimex; 33% in m.a.) TEA 2.5 Tromethamine 3.5 Turbidity (in NTU) 52

[0150] It is found that formula F1 according to the invention is transparent.

EXAMPLE 3

Preparation and Evaluation of Compositions According to the Invention

[0151] Compositions F2 and F3 according to the invention (see Table 3), are prepared as described in example 1.

[0152] Their homogeneity and transparency, and their stickiness and slip during application, are evaluated.

TABLE-US-00003 TABLE 3 F2 F3 Gel Water Qs 100 phase Preservatives QS CARBOMER 0.5 0.5 (carbopol 980) Triethanolamine (TEA) 0.7 0.7 Xanthan gum 0.3 0.3 (KELTROL CG-T CP KELCO) CARRAGEENAN 0.5 0.5 (SATIAGUM VPC410 CARGILL) Aqueous Water 15 15 filter Phenylbenzimidazole 8 8 phase Sulfonic Acid (Eusolex 232 made by Merck) Terephthalylidene Dicamphor 10 10 Sulfonic Acid (3.3% m.a.) (3.3% m.a.) (Mexoryl SX made by Chimex; 33% in m.a.) TEA 2.5 2.5 Tromethamine 3.5 3.5 Glycerin — 2 Propylene glycol — 19 Butylene glycol — 6.5 Homogeneity Homogeneous Homogeneous Turbidity (in NTU) 71 50

[0153] Compositions according to the invention are homogeneous and transparent. Furthermore, the presence of polyols as in composition F3, reduces stickiness and improves slip during application.