COSMETIC COMPOSITIONS

Abstract

The present invention relates to cosmetic compositions comprising at least one inorganic micropigment, characterized in that said cosmetic compositions are substantially free of any C.sub.12-16 alkyl poly-glucoside.

Claims

1. A cosmetic composition comprising at least one inorganic micropigment and a C.sub.8-10 alkyl poly-glucoside, characterized in that the composition is substantially free of any C.sub.12-16 alkyl poly-glucoside.

2. The cosmetic composition according to claim 1, wherein the composition contains no more than 0.05 wt.-%, preferably no more than 0.01%, most preferably no more than 0.005 wt.-% of C.sub.12-16 alkyl poly-glucosides, based on the total weight of the cosmetic compositions

3. The cosmetic composition according to claim 1, wherein the amount of the C.sub.8-10 alkyl poly-glucoside is selected in the range of 0.001 to 5 wt.-%, preferably in the range of 0.01 to 2 wt.-%, most preferably in the range of 0.05 to 1.5 wt.-%, based on the total weight of the cosmetic composition.

4. The cosmetic composition according to claim 1, wherein the amount of the at least one inorganic micropigment is selected in the range of 0.1 to 40 wt.-%, preferably in the range of 1 to 30 wt.-%, based on the total weight of the cosmetic composition.

5. The cosmetic composition according to claim 1, wherein the C.sub.8-10 alkyl poly-glucoside consists essentially of caprylyl/capryl poly-glucosides.

6. The cosmetic composition according to claim 5, wherein the ratio of caprylyl mono-glucoside to capryl mono-glucoside in the caprylyl/capryl poly-glucosides is selected in the range of 3:1 to 1:3.

7. The cosmetic composition according to claim 1, wherein the C.sub.8-10 alkyl poly-glucoside is made from glucose derived from corn and fatty alcohols derived from coconut and palm kernel oils.

8. The cosmetic composition according to claim 1, wherein the inorganic micropigment is an inorganic UV filter or a coloring agent.

9. The cosmetic composition according to claim 8, wherein the inorganic micropigment is a titanium dioxide coated with at least one coating, preferably with aluminium hydroxide, a polyol, silica, a silicon oil or an alkyl silane.

10. The cosmetic composition according to claim 9, wherein the titanium dioxide is a double coated titanium dioxide having an inner aluminium hydroxide or inorganic silica coating and an outer organic coating selected from the group consisting of simethicone, methicone, dimethicone, polysilicone-15, cetyl phosphate, stearic acid and mixtures thereof.

11. The cosmetic composition according to claim 8, wherein the coloring agent is an iron oxide or a titanium dioxide having a particle size selected in the range of 0.001 to 150 m, preferably in the range of 0.002 to 100 m, more preferably in the range of 0.02 to 50 m.

12. The cosmetic composition according to claim 1, wherein the composition comprises at least one further organic UV filter substance.

13. The composition according to claim 12, wherein the at least one further organic UV-filter substance encompasses methylene bis-benzotriazolyl tetramethylbutylphenol.

14. The cosmetic composition according to claim 1, wherein the cosmetic composition is an oil-in-water (O/W) emulsion comprising an oily phase dispersed in an aqueous phase.

15. The cosmetic composition according to claim 1, wherein the composition is a sunscreen, or a make-up/foundation composition

Description

EXAMPLE

1. Analytics

[0064] The respective samples have been dissolved in a mixture of tetrahydrofurane/water (50/50), approx. 1 mg/ml, and were analysed by HPLC mass spectrometry using a reversed-phase YMC Pro C4 column with a water/acetonitrile gradient with 0.1% methanesulfonic acid (5.fwdarw.90% acetonitrile over 15 min). Detection was performed on an Agilent 6130 single MSD operating in ES positive mode. TIC and EIC were used to determine the relative distribution of the compounds of interest. The relative distribution of the alkyl monoglucosides is outlined in table 1. All % are area-%.

TABLE-US-00001 TABLE 1 Relative distribution of the alkyl monoglucosides Relative amount [%] Sample Alkyl (8-16) Glucoside* C8-C10 polyglucoside C.sub.8 monoglucoside 20.8 44.1 C.sub.10 monoglucoside 16.6 54.7 C.sub.12 monoglucoside 41.5 1.2 C.sub.14 monoglucoside 20.1 n.d. C.sub.16 monoglucoside 0.9 n.d. *Commercially available as Plantacare UP 2000 at Cognis; approx, absolute amount as determined by HPLC-MS of C.sub.8/C.sub.10/C.sub.12/C.sub.14/C.sub.16 alkyl monoglucoside ~77% (area %) Commercially available as Green APG 0810 at Shanghai Fine Chemicals; approx. absolute amount as determined by HPLC-MS of C.sub.8/C.sub.10 alkyl monoglucoside ~78% (area %) n.d.: not detected

2. Formulation

[0065] To 19.6 g of Sun Ozon Sonnenspray SPF 30 containing titanium dioxide (nano) (Formulation I) either 0.4 g of C8-C16 poly-glucoside (Plantacare UP 2000) or 0.4 g of C8-C10 poly-glucoside (APG 0810) has been added. The results are presented in table 2.

TABLE-US-00002 TABLE 2 Results Formulation I Alkyl (8-16) Glucoside* C8-C10 polyglucoside After 5 min TiO.sub.2 agglomerate fluid cream, conform After 30 min oil exudation & agglomerate fluid cream, conform

[0066] Furthermore, the formulations as outlined in table 2 have been prepared and analysed via microscopy as well as visually to assess the acceptability of the product form. As can be retrieved, only the samples prepared a C.sub.8-10 poly-glucoside according to the present invention (Green APG 0810) lead to an acceptable product form while the use of a C.sub.8-16 poly-glucoside (Plantacare UP 2000) lead to a significant agglomeration or the titanium dioxide and even to phase separation of the emulsion.

TABLE-US-00003 TABLE 3 Formulations II INCI (Tradename) Ref 1 Inv 1 Ref 2 Inv 2 Ref 3 Inv 3 Octocrylene 10.00 10.00 10.00 10.00 10.00 10.00 (Parsol 340) C12-15 Alkyl Benzoate 5.00 5.00 5.00 5.00 5.00 5.00 (Finsolv TN) Dicaprylyl Ether 2.00 2.00 2.00 2.00 2.00 2.00 (Cetiol OE) Homosalate 8.00 8.00 8.00 8.00 8.00 8.00 (Parsol HMS) Ethylhexyl Salicylate 5.00 5.00 5.00 5.00 5.00 5.00 (Parsol EHS) Titanium Dioxide (and) Silica 4.50 4.50 (Eusolex T-AVO) Titanium Dioxide (and) Aluminum 4.50 4.50 Hydroxide (and) Stearic Acid (Tayca MT-100TV) Titanium Dioxide (and) Silica 4.50 4.50 (and) Dimethicone (Parsol TX) Butyl Methoxydibenzoylmethane 4.00 4.00 4.00 4.00 4.00 4.00 (Parsol 1789) VP/Hexadecene Copolymer 1.00 1.00 1.00 1.00 1.00 1.00 (Antaron V-216) Aqua Ad 100 Ad 100 Ad 100 Ad 100 Ad 100 Ad 100 (WATER DEM) Glycerin 6.00 6.00 6.00 6.00 6.00 6.00 Carbomer 0.10 0.10 0.10 0.10 0.10 0.10 (Carbopol Ultrez 30) Xanthan Gum 0.15 0.15 0.15 0.15 0.15 0.15 (Keltrol CG-T) Acrylates/C10-30 Alkyl Acrylate 0.30 0.30 0.30 0.30 0.30 0.30 Crosspolymer (Pemulen TR-2) Sodium-EDTA 0.10 0.10 0.10 0.10 0.10 0.10 (Na-EDTA) Phenoxyethanol (and) 1.00 1.00 1.00 1.00 1.00 1.00 Ethylhexylglycerin (Euxyl PE 9010) Alcohol 8.00 8.00 8.00 8.00 8.00 8.00 (Ethanol) Decylglucoside 2.00 2.00 2.00 (Plantacare 200 UP) Decylglucoside 2.00 2.00 2.00 (Green APG 0810) pH 6.11 6.19 6.25 6.26 5.92 5.94 Agglomeration strong few strong some strong few Phase separation Yes No No No No No Acceptable product form No Yes No Yes No Yes