A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/58 (2006.01) A61K 8/11 (2006.01) A61K 8/35 (2006.01) A61Q 17/04 (2006.01)
Patent
CA 2353718
The invention concerns a method for improving the UV radiation stability of a photosensitve sunscreen filter, which consists in incorporating said filter in a substance produced by sol-gel process from at least a silicon alkoxide and at least a surfactant. The invention also concerns a photostable substance comprising in combination a sunscreen filter and a light stabilizing substance produced by sol-gel process containing at least a silicon alkoxide and at least a non-ionic surfactant, and a cosmetic and/or dermatological composition comprising in a cosmetically and/or dermatologically acceptable support, an efficient amount of a photostable substance. Said cosmetic and/or dermatological composition is particularly designed to protect the skin and/or keratinous materials, against ultraviolet radiation.
L'invention concerne un procédé pour améliorer la stabilité vis-à-vis du rayonnement UV d'un filtre solaire photosensible, comprenant l'incorporation dudit filtre à un matériau élaboré par voie sol-gel à partir d'au moins un alcoxyde de silicium et d'au moins un tensioactif. Elle vise aussi un matériau photostable qui comprend l'association d'un filtre solaire photosensible et d'un matériau photostabilisant élaboré par voie sol-gel incluant au moins un alcoxyde de silicium et au moins un tensioactif non ionique, ainsi qu'une composition cosmétique et/ou dermatologique comprenant dans un support cosmétiquement et/ou dermatologiquement acceptable, une quantité efficace d'un matériau photostable. Cette composition cosmétique et/ou dermatologique est destinée principalement à la protection de la peau et/ou des matières kératiniques contre le rayonnement ultraviolet.
Chodorowski Sandrine
Quinn Francis Xavier
Sanchez Clement
L'oreal
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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