GEL-TYPE SKIN EXTERNAL COMPOSITION
The present invention addresses the problem of providing a gel-type skin external composition containing a L-ascorbic acid derivative, which has excellent shape retention, stability, and excellent feeling of use even when salts coexist in the composition. The above problem is solved by providing a gel-type skin external composition containing a L-ascorbic acid derivative, a nonionic synthetic water-soluble polymer, and a natural water-soluble polysaccharide.
1 . A gel-type skin external composition comprising a L-ascorbic acid derivative, a nonionic synthetic water-soluble polymer, and a natural water-soluble polysaccharide.
2 . The gel-type skin external composition of claim 1 , wherein the L-ascorbic acid derivative is L-ascorbic acid 2-glucoside.
3 . The gel-type skin external composition of claim 1 , wherein the nonionic synthetic water-soluble polymer is one or more members selected from PEG-240/HDI copolymer bis-decyltetradeceth-20 ether, polyurethane, polyvinyl alcohol, ethylene oxide-propylene oxide block copolymer, and derivatives thereof.
4 . The gel-type skin external composition of claim 1 , wherein the natural water-soluble polysaccharide is one or more members selected from soluble cellulose, xanthan gum, guar gum, tamarind gum, locust bean gum, soluble starch, soluble dextrin, cyclodextrin, pullulan and derivatives thereof.
5 . The gel-type skin external composition of claim 1 , wherein the composition is excellent in shape retention, feeling of use, and stability.
6 . The gel-type skin external composition of claim 1 , wherein a mass ratio of the L-ascorbic acid derivative, the nonionic synthetic water-soluble polymer, and the natural water-soluble polysaccharide on a dry solid basis is in the range of 1:0.01˜500:0.01˜500.
7 . The gel-type skin external composition of claim 1 , further comprising a polyoxyethylene dicarboxylic acid ester.
8 . The gel-type skin external composition of claim 7 , wherein the polyoxyethylene dicarboxylic acid ester is one or more members selected from diethoxyethyl succinate, diethoxyethyl adipate, and diethoxyethyl sebacate.