Abstract: 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.

Abstract: 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.

Abstract: Use of a polyamino polymer to inhibit the light-induced peroxidation of lipids, particularly inhibition of the photo-peroxidation of lipids induced by nanopigments. The invention also relates to the use of a polyamino polymer to inhibit the light-induced peroxidation of proteins. This property of polyamino polymers finds applications in particular in the cosmetics, pharmaceutical, veterinary and agrifood fields.

Abstract: Use of a polyamino polymer to inhibit the light-induced peroxidation of lipids, particularly inhibition of the photo-peroxidation of lipids induced by nanopigments. The invention also relates to the use of a polyamino polymer to inhibit the light-induced peroxidation of proteins. This property of polyamino polymers finds applications in particular in the cosmetics, pharmaceutical, veterinary and agrifood fields.

Abstract: 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.

Abstract: 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.

Abstract: 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.

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

Abstract: 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.

Abstract: 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.

Abstract: 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.

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.

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.

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.

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.

Abstract: 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.

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.

Abstract: 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.