Cosmetic compositions comprising a cyclodipeptide compound

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/64 (2006.01) A61K 8/26 (2006.01) A61K 8/28 (2006.01) A61K 8/34 (2006.01) A61K 8/49 (2006.01) A61Q 15/00 (2006.01) A61K 8/92 (2006.01)

Patent

CA 2471607

An improved process for the preparation of cosmetic formulations containing a cosmetic active and a continuous phase comprising a water-immiscible liquid carrier, that are structured by a cyclo dipeptide (CDP) having the general formula in which R1 and/or R2, which may be the same or preferably different, each represents a hydrocarbon or alkylene ester group and the other may alternatively represent hydrogen,which employs a monohydric alcohol having a melting point of below 30oC and a boiling point of greater than 100oC and a cosmetic active material optionally together with at least one water- immiscible liquid carrier oil to assist in the dissolution of the structurant and modify the gelling temperature of the resultant mixture. Preferably, the CDP is dissolved in the monohydric alcohol and optionally up to half the water- immiscible oil prior to being mixed with the remaining ingredients of the composition.

L'invention concerne une méthode améliorée de préparation de formulations cosmétiques, qui comprennent une substance cosmétique active et une phase continue contenant un support liquide immiscible dans l'eau, ladite substance et ladite phase étant structurées par un cyclo dipeptide (CDP) de la formule générale (I). Dans ladite formule, R1 et/ou R2, qui peuvent être identiques ou, de préférence, différents, représentent chacun un groupe hydrocarbure ou un groupe alkylène ester, l'autre groupe pouvant représenter alternativement hydrogène. La méthode de l'invention met en oeuvre un alcool monohydroxylé présentant un point de fusion inférieur à 30 ·C et un point d'ébullition supérieur à 100 ·C et une matière cosmétique active, éventuellement accompagnée d'au moins moins une huile support liquide immiscible dans l'eau. L'alcool monohydroxylé contribue à la dissolution de la matière structurante et à modification de la température de gélification du mélange résultant. De préférence, le CDP est dissous dans l'alcool monohydroxylé et, éventuellement, jusqu'à la moitié de l'huile immiscible dans l'eau, avant d'être mélangé avec les ingrédients restants de la composition.

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