Multi-phase light screening agent, process for its...

A - Human Necessities – 61 – K

Patent

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A61K 8/03 (2006.01)

Patent

CA 2218534

The invention relates to a multi-phase light screening agent. The aim of the invention is to provide an improvement in the light screening properties by a special arrangement of prior art light screening agents and prevent direct contact between chemical filters and the skin. The light screening agent consists of at least two separate and essentially liquid phases, where the u/v filters are in at least two separate phases and the phases spontaneously separate after a brief and gentle mixing process while the u/v filters remain in the phase in which they where originally contained. The light screening factor is increased by a multiple by the multi-layer arrangement of the invention. It can be applied to the skin via a dispenser in which the liquid phases are separate and mixed before use.

L'invention concerne un écran solaire à phases multiples et vise à améliorer les propriétés photoprotectrices, par configuration particulière d'écrans solaires connus dans un système de formulation, et à éviter que les filtres chimiques ne soient en contact direct avec la peau. L'écran solaire comprend au moins deux phases essentiellement liquides, séparées l'une de l'autre. Les filtres U.V. se trouvent dans au moins deux phases séparées. Les phases se séparent spontanément après une brève opération de mélange qui n'altère pas le produit, où chaque filtre U.V. demeure dans la phase dans laquelle il était contenu à l'origine. Cette configuration à phases multiples permet d'augmenter le facteur de protection solaire d'un multiple. L'application de cet écran solaire sur la peau peut s'effectuer par l'intermédiaire d'un distributeur contenant les phases liquides de manière séparée, et par mélange des phases avant utilisation.

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