ALGINATE-BASED FACIAL MASK

Abstract

The invention relates to an alginate-based facial mask, provided in the form of a water-free cosmetic composition that comprises a) at least one water-soluble alginate, b) at least one calcium salt, c) at least one oil, d) at least one emulsifier selected from the group polyglyceryl-(4) isostearate, polyglyceryl-(10) octanoate/caprate, polyglyceryl-(10) stearate, PEG-7 glyceryl cocoate, polyglyceryl-(3) methyl glucose distearate and polyglyceryl-(4) laurate.

Claims

1.-18. (canceled)

19. A cosmetic composition, wherein the composition is anhydrous and comprises a) at least one water-soluble alginate, b) at least one calcium salt, c) at least one oil, d) at least one emulsifier from the group polyglyceryl-4 isostearate, polyglyceryl-10 caprylate/caprate, polyglyceryl-10 stearate, PEG-7 glyceryl cocoate, polyglyceryl-3 methyl glucose distearate, and polyglyceryl-4 laurate.

20. The composition of claim 19, wherein the composition further comprises at least one polyol.

21. The composition of claim 20, wherein the polyol comprises one or more of propylene glycol, butylene glycol, glycerin and sorbitol.

22. The composition of claim 19, wherein the polyol comprises at least glycerin.

23. The composition of claim 20, wherein a total concentration of the one or more polyols is from 15 wt % to 50 wt %, based on a total weight of the composition.

24. The composition of claim 19, wherein the at least one water-soluble alginate comprises alginic acid and/or a salt of alginic acid.

25. The composition of claim 19, wherein the at least one water-soluble alginate comprises sodium alginate.

26. The composition of claim 19, wherein a total concentration of the at least one water-soluble alginate is from 5 wt % to 30 wt %, based on a total weight of the composition.

27. The composition of claim 19, wherein a total concentration of the at least one calcium salt is from 5 wt % to 20 wt %, based on a total weight of the composition.

28. The composition of claim 19, wherein the at least one calcium salt comprises one or both of calcium sulfate and calcium sulfate dihydrate.

29. The composition of claim 19, wherein a total concentration of the at least one oil is from 2 wt % to 40 wt %, based on a total weight of the composition.

30. The composition of claim 19, wherein the at least one oil comprises at least one of ethyl hexyl stearate, octyl cocoate, coco glycerides, dicaprylyl carbonate, caprylic capric triglyceride, cetearyl isononanoate, C12-15 alkyl benzoate, and isopropyl palmitate, a total concentration of these oils being from 5 wt % to 25 wt %, based on a total weight of the composition.

31. The composition of claim 19, wherein the at least one emulsifier comprises at least one of polyglyceryl-4 isostearate, polyglyceryl-10 caprylates/caprates, polyglyceryl-10 stearate, PEG-7 glyceryl cocoate, polyglyceryl-3 methyl glucose distearate, and polyglyceryl-4 laurate, a total concentration of these emulsifiers being from 0.5 wt % to 11 wt %, based on a total weight of the composition.

32. The composition of claim 19, wherein the composition further comprises one or more complexing agents for calcium ions.

33. The composition of claim 32, wherein a concentration of the one or more complexing agents is from 0.2 wt % to 5 wt %, based on a total weight of the composition.

34. The composition of claim 19, wherein the composition further comprises at least one probiotically active bacterial strain which, when colonized on skin, has a positive effect on skin health.

35. The composition of claim 34, wherein the composition further comprises at least one protector strain of genus Lactobacillus which promotes a colonization of the probiotically active bacterial strain.

36. The composition of claim 19, wherein the composition further comprises licochalcone A.

37. A method of preparing a cosmetic preparation for use as a mask which can be peeled off after application to skin, wherein the method comprises i. providing the anhydrous cosmetic composition of claim 19, ii. mixing the composition with water to provide an emulsion for application to the skin.

38. The method of claim 37, wherein the composition of claim 19 is mixed with water in a weight ratio to water of from 10:90 to 60:40.

Description

COMPARATIVE EXPERIMENTS AND EXAMPLES

[0071] The following examples are intended to illustrate the present invention without limiting it. All indications of amounts, proportions and percentages are, unless otherwise indicated, related to the weight and the total amount or the total weight of the preparations, respectively.

[0072] The following compositions were provided, wherein only examples 2, 4 and 5 show compositions according to the invention. Examples 1, 3 and 6 are comparative examples which are not according to the invention.

TABLE-US-00001 Ingredients 1 2 3 4 5 6 Sodium Alginate 15.52 15 15 15 15 15 Calcium Sulfate 12.41 12 12 12 12 12 Dihydrate Tetrasodium 2.93 2.83 2.83 2.83 2.83 2.83 Pyrophosphate Dicaprylyl 17.24 16.66 16.66 16.66 16.66 16.66 Carbonate Glycerin 37.59 36.34 36.34 36.34 36.34 36.34 Polyglyceryl-4 3.33 Isostearate Sodium Stearoyl 3.33 Glutamate Polyglyceryl-10 3.33 Caprylate/Caprate PEG-7 Glyceryl 3.33 Cocoate Potassium Cetyl 2 Phosphate + Hydrogenated 1.33 Coco Glycerides Silica 10.86 10.5 10.5 10.5 10.5 10.5 Timiron Synwhite 3.45 3.34 3.34 3.34 3.34 3.34 40 (synthetic fluorophlogopite + CI 77891 + tin Oxide).sup.1 .sup.1Timiron ® Synwhite 40 available from EMD Performance Materials (Merck KGaA) comprising:

TABLE-US-00002 Weight Chemical proportion Color composition in % Index CAS No. Fluorophlogopite 68-76 12003-38-2 Titanium Dioxide 24-31 77891 13463-67-7 Tin Oxide ≤1 18282-10-5

[0073] After preparation, compositions 1 to 6 were mixed separately with water. The mixing ratio is given below:

TABLE-US-00003 Composition 1 2 3 4 5 6 Weight proportion 29 30 30 30 30 30 of the composition Weight proportion 71 70 70 70 70 70 water

[0074] A visual analysis of the mixtures obtained revealed the following: The examples which are not in accordance with the invention and the mixtures containing the composition which are not in accordance with the invention (1, 3, 6) showed immediate phase separation. Consequently, these mixtures were unstable. Mixtures of the compositions according to the invention (2, 4, 5) with water were significantly more stable.

[0075] Other compositions according to the invention are listed below:

TABLE-US-00004 Ingredients 7 8 9 10 11 12 Sodium Alginate 15 15 15 15 15 15.51 Calcium Sulfate 12 12 12 12 12 12.41 Dihydrate Tetrasodium 2.84 2.5 3.33 2.84 2.84 2.93 Pyrophosphate Dicaprylyl 16.67 16.67 16.67 23.33 0 0 Carbonate Dimethicone 0 0 0 0 16.67 0 Caprylic/Capric 0 0 0 0 0 17.25 Triglyceride Jojoba Oil 0 0 0 0 0 0 Glycerin 36.33 36.67 35.84 29.67 36.33 37.59 Polyglyceryl-4 0 3.33 0 3.33 0 3.44 Isostearate Polyglyceryl-10 0 0 3.33 0 3.33 0 Caprylate/Caprate TEGO ® Care 3.33 0 0 0 0 0 LTP.sup.2(Sorbitan Laurate (and) Polyglyceryl-4 Laurate (and) Dilauryl Citrate) Silica 10.5 10.5 10.5 10.5 10.5 10.87 Tim iron 3.33 3.33 3.33 3.33 3.33 0 Synwhite 40 .sup.2From Evonik

TABLE-US-00005 Ingredients 13 14 15 16 17 18 Sodium Alginate 15.51 15 15 15 15 15 Calcium Sulfate 12.41 12 12 12 12 12 Dihydrate Tetrasodium 2.93 2.83 2.83 2.83 2.83 2.83 Pyrophosphate Dicaprylyl 0 0 0 0 16.67 16.67 Carbonate Dimethicone 0 16.67 0 0 0 0 Caprylic/Capric 0 0 16.66 0 0 0 Triglyceride Jojoba Oil 17.25 0 0 16.67 0 0 Glycerin 37.59 0 0 0 36.33 36.33 Propylene Glycol 0 36.33 0 0 0 0 Butylene Glycol 0 0 36.34 0 0 0 Sorbitol 0 0 0 36.33 0 0 Polyglyceryl-4 0 0 3.34 0 0 0 Isostearate Polyglyceryl-10 3.45 3.34 0 3.34 0 0 Caprylate/Caprate TEGO ® Care 0 0 0 0 3.34 3.34 LTP.sup.2(Sorbitan Laurate (and) Polyglyceryl-4 Laurate (and) Silica 10.86 10.5 10.5 10.5 0 13.83 Diatomaceous 0 0 0 0 13.83 0 Earth Trimiron 0 3.33 3.33 3.33 0 0 Synwhite 40 .sup.2From Evonik

TABLE-US-00006 Ingredients 19 20 21 22 23 24 Sodium Alginate 15 15 15 15 15 15.51 Calcium Sulfate 12 12 12 12 12 12.41 Dihydrate Tetrasodium 2.84 2.5 3.33 2.84 2.84 2.93 Pyrophosphate Dicaprylyl 16.67 16.67 16.67 23.33 0 0 Carbonate Dimethicone 0 0 0 0 16.67 0 Caprylic/Capric 0 0 0 0 0 17.25 Triglyceride Jojoba Oil 0 0 0 0 0 0 Glycerin 36.33 36.67 35.84 29.67 36.33 37.59 Polyglyceryl-10 0 3.33 0 3.33 0 3.44 stearate Polyglyceryl-3 3.33 0 3.33 0 3.33 0 methyl-glucose distearate Silica 10.5 10.5 10.5 10.5 10.5 10.87 Timiron 3.33 3.33 3.33 3.33 3.33 0 Synwhite 40

TABLE-US-00007 Ingredients 25 26 27 Sodium Alginate 15.51 15 15 Calcium Sulfate 12.41 12 12 Dihydrate Tetrasodium 2.93 2.83 2.83 Pyrophosphate Dicaprylyl 0 0 0 Carbonate Dimethicone 0 16.67 0 Caprylic/Capric 0 0 16.66 Triglycerides Jojoba Oil 17.25 0 0 Glycerin 37.59 0 0 Propylene Glycol 0 36.33 0 Butylene Glycol 0 0 36.34 Sorbitol 0 0 0 Sorbitan Laurate 0 1.15 0.21 Polyglyceryl-4 3.45 2.05 2.84 Laurate Dilauryl Citrate 0.14 0.29 Silica 10.86 10.5 10.5 Diatomaceous 0 0 0 Earth Trimiron Synwhite 0 3.33 3.33 40

[0076] After preparation, compositions 7 to 27 were mixed in the ratio of 24:76, 27:73, 31:69 and 36:64 (composition:water), respectively.