L'oreal

Boudiaf Boussouira

Quang Lan Nguyen

Didier Candau

Jean-Thierry Simonnet

Alain J Ribier

Paolo Giacomoni

Stephanie Prince

Michel Philippe

Olivier De Lacharriere

Dang-Man Pham

Véronique Burnier

Odette Jammayrac

The present invention relates to the field of preventive and/or curative protection of delicate lips. More precisely, a subject-matter of the invention is the cosmetic use of active principles which are capable of enhancing the content of ceramides in the lips, such as a ceramide precursor comprising a 6-hydroxy-4-sphingenine base, ascorbic acid or one of its analogues, as protective agent for delicate lips. The invention is additionally targeted at corresponding compositions for labial application.

Use of active principles which are capable of enhancing the content of ceramides, as protective agent for delicate lips

Novel cosmetic and/or dermatological compositions comprising, in a cosmetically and/or dermatologically acceptable vehicle, i) a cinnamic acid derivative, in particular 2-ethylhexyl p-methoxycinnamate, and ii) at least one polyamino polymer, and the use of these compositions in the cosmetic and/or dermatological fields. These compositions are particularly photostable.

Composition comprising a cinnamic acid derivative and a polyamino polymer

A composition containing at least one retinoid and at least one histidine derivative. The histidine derivative improves the stability of the retinoid in the composition. The composition may be used to treat skin and/or hair.

Combination of a retinoid with a histidine derivative

A composition comprising the combination of at least one retinoid selected from the group consisting of vitamin A (retinol) and the bioconvertible precursors of vitamin A and at least one polyamine polymer.

Combination of a retinoid with a polyamine polymer

Cosmetic and/or dermatalogoical compositions comprising, in a cosmetically and/or dermatologically acceptable vehicle, i) a dibenzoylmethane derivative, in particular 4-tert-butyl-4&prime;-methoxydibenzoylmethane, and ii) at least one polyamino polymer. These compositions are particularly photostable.

Composition comprising a dibenzoylmethane derivative and a polyamino polymer

A product suitable for topical application to skin, containing at least one enzyme which is a lipase, at least one precursor of a vitamin used in cosmetics and/or dermatology, which is an ester comprising at least one ester function with a linear or branched, saturated or unsaturated chain containing from 2 to 25 carbon atoms, and at least one C.sub.6 to C.sub.22 alcohol, where the weight ratio between the alcohol and the precursor is from 0.25 to 30/1, with the exception of alcohol/precursor combinations consisting of (1) cetyl alcohol/ascorbyl palmitate with a weight ratio of 4/1, and (2) stearyl alcohol/retinyl palmitate with a weight ratio of 1/0.6. According to a preferred form of the invention, the precursor and the lipase are packaged so as not to be in contact with each other until they are applied to the skin.

Topical application product containing a lipase, a vitamin precursor and

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.

Composition containing a non-photocatalytic metal oxide and tocopherol,

Composition containing a non-photocatalytic metal oxide and tocopherol

The invention relates to the use of a spin trap employed as an electron paramagnetic resonance measurement probe, in a cosmetic or dermatological composition for the light-protective, anti-ageing and/or anti-acne treatment of the skin. In particular, this spin trap is encapsulated in lipid vesicles which are capable of diffusing into the deep layers of the skin.

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Paris, France

Boudiaf Boussouira