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US 5,961,993 AGranted
Composition containing a non-photocatalytic metal oxide and tocopherol, its use in the treatment of acne
AssigneeL'oreal
InventorsBoudiaf Boussouira, Quang Lan Nguyen
Life of this patent
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Abstract
Cosmetic and/or dermatological compositions containing a non-photocatalytic metal oxide and tocopherol and, optionally, a metal-inactivating complexing agent are effective for inhibiting the light-induced peroxidation of lipids, and in particular lipids of sebaceous origin such as squalene.
Claims9
A method for treating acne, comprising applying to skin a composition which comprises:
- 1) 0.02-6% by weight of at least one tocopherol selected from the group consisting of alpha, beta, gamma and delta tocopherols and mixtures thereof;
- 2) 0.1-5% by weight of zinc oxide or titanium dioxide;
- and
- 3) 0.005-0.3% by weight of a metal-inactivating complexing agent selected from the group consisting of ethylenediaminetetra(methylenephosphonic acid), diethylenetriaminepenta(methylenephosphonic acid), sodium salts thereof, and a mixture thereof.
1 more element
Dependencies are inferred from the claim text.