Topical skin care formulations comprising plant extracts
A method for treating a person's skin is disclosed. The method includes topically applying to the skin a composition comprising from 0.001% to 20% by weight of an aqueous, alcoholic, or aqueous-alcoholic extract from Tetracentron sinense , wherein the extract from Tetracentron sinense reduces oxidation in the skin or reduces MMP-1 activity in the skin.
1. A method for treating a person's skin, the method comprising topically applying to the skin a composition comprising from 0.001% to 20% by weight of an extract from Tetracentron sinense , wherein the extract is an aqueous, alcoholic, or aqueous-alcoholic extract from Tetracentron sinense , and wherein the extract from Tetracentron sinense reduces oxidation in the skin or reduces MMP-1 activity in the skin.
2. The method of claim 1 , wherein the composition is applied to a fine line or wrinkle.
3. The method of claim 1 , wherein the composition increases the firmness of the skin.
4. The method of claim 1 , wherein the composition is an emulsion.
5. The method of claim 4 , wherein the composition is an oil-in-water emulsion.
6. The method of claim 1 , wherein the composition is a cream or a lotion.
7. The method of claim 1 , wherein the composition is a solution.
8. The method of claim 1 , wherein the composition is a gel.
9. The method of claim 1 , wherein the composition is anhydrous.
10. The method of claim 1 , wherein the composition comprises 0.001% to 5%, by weight, of the extract.
11. The method of claim 1 , wherein the composition further comprises:
(a) water;
(b) a chelating agent;
(c) a moisturizing agent;
(d) a preservative; and
(e) a thickening agent.
12. The method of claim 1 , wherein the composition further comprises 35-80% by weight of water.
13. The method of claim 1 , wherein the extract is a lyophilized extract in powdered form.
14. The method of claim 1 , wherein the extract from Tetracentron sinense reduces oxidation in the skin.
15. The method of claim 1 , wherein the extract from Tetracentron sinense reduces MMP-1 activity in the skin.
16. The method of claim 1 , wherein the extract from Tetracentron sinense reduces oxidation in the skin and reduces MMP-1 activity in the skin.
17. The method of claim 1 , wherein the extract is from the whole plant of Tetracentron sinense.
18. The method of claim 1 , wherein the extract is an alcoholic extract.
19. The method of claim 18 , wherein the alcoholic extract is an ethanolic extract.