Sunscreens

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/49 (2006.01) A61K 8/27 (2006.01) A61K 8/29 (2006.01) A61K 8/35 (2006.01) A61K 8/37 (2006.01) A61Q 17/04 (2006.01)

Patent

CA 2528660

A UV sunscreening composition suitable for cosmetic or topical pharmaceutical use which comprises an amount of one or more organic components which are photosensitive and/or which are degraded and/or in which degradation is induced by another ingredient of the composition, and an amount of TiO2 and/or ZnO which has been doped with another element and/or reduced zinc oxide, this composition having a rate of loss of UV absorption at least 5% less than that of a composition having the same formulation except that it does not contain the said TiO2 and/or ZnO which has been doped with another element or the said reduced zinc oxide.

L'invention concerne une composition d'écran solaire UV conçue pour une utilisation cosmétique ou pharmaceutique topique. Cette composition comprend un ou plusieurs composants organiques qui sont photosensibles et/ou dégradés et/ou dans lesquels la dégradation est déclenchée par un autre ingrédient contenu dans la composition; ladite composition comprend également une quantité de TiO¿2? et/ou de ZnO, lequel a été dopé avec un autre élément et/ou avec de l'oxyde de zinc réduit. La composition décrite dans cette invention présente un taux de perte d'absorption UV d'au moins 5 % de moins qu'une composition présentant la même formulation mais sans le TiO¿2? et/ou le ZnO dopé avec un autre élément ou l'oxyde de zinc réduit.

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