Moisturizing cosmetic composition
View Patent ↗The invention relates to a moisturizing cosmetic composition comprising: (A) 30-99 wt % of birch sap, (B) 0.001-5 wt % of hydrolyzed sodium hyaluronate, and (C) optionally, ingredients commonly used in skincare cosmetics, wherein the moisturizing cosmetic composition of the invention does not comprise water typically added as a separate component.
1. A moisturizing cosmetic composition, comprising:
(A) 30-99 wt % of birch sap,
(B) 0.001-5 wt % of hydrolyzed sodium hyaluronate, and
(C) optionally, ingredients commonly used in skin care cosmetics;
wherein the percentage is based on the total weight of the composition, and
the moisturizing cosmetic composition does not comprise water alone added as a separate component.
2. The moisturizing cosmetic composition according to claim 1 , wherein the composition does not comprise a chelating agent.
3. The moisturizing cosmetic composition according to claim 1 , wherein the composition comprises 50-95 wt % of birch sap.
4. The moisturizing cosmetic composition according to claim 1 , wherein the composition comprises 0.01-1 wt % of hydrolyzed sodium hyaluronate.
5. The moisturizing cosmetic composition according to claim 1 , wherein the hydrolyzed sodium hyaluronate has a molecular weight of 1-10 KDa.
6. The moisturizing cosmetic composition according to claim 2 , wherein the composition comprises 50-95 wt % of birch sap.
7. The moisturizing cosmetic composition according to claim 2 , wherein the composition comprises 0.01-1 wt % of hydrolyzed sodium hyaluronate.
8. The moisturizing cosmetic composition according to claim 2 , wherein the hydrolyzed sodium hyaluronate has a molecular weight of 1-10 KDa.
9. A method for increasing the transdermal absorption rate of hydrolyzed sodium hyaluronate, comprising adding birch sap to a moisturizing cosmetic composition comprising hydrolyzed sodium hyaluronate but no water.
10. The method according to claim 9 , wherein the composition comprises 30-99 wt % of birch sap and 0.001-5 wt % of hydrolyzed sodium hyaluronate, based on the total weight of the composition.
11. The method according to claim 9 , wherein the composition does not comprise a chelating agent.
12. The method according to claim 9 , wherein the hydrolyzed sodium hyaluronate has a molecular weight of 1-10 KDa.
13. The method according to claim 10 , wherein the composition does not comprise a chelating agent.
14. The method according to claim 10 , wherein the hydrolyzed sodium hyaluronate has a molecular weight of 1-10 KDa.
15. A moisturizing composition consisting of the following ingredients:
Betula alba sap 70-90 (wt. %);
methyl hydroxybenzoate 0.05-0.4 (wt. %);
hydrolyzed sodium hyaluronate 0.1-0.5 (wt. %);
pentanediol 1-5 (wt. %);
glycerol 1-10 (wt. %);
dipropylene glycol 0.5-5 (wt. %);
butanediol 1-10 (wt. %);
citric acid 0.01-0.5 (wt. %); and
arginine 0.05-1 (wt. %).
16. The moisturizing composition according to claim 15 , which is a toner.