Soft antiperspirant compositions

A - Human Necessities – 45 – D

Patent

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Details

A45D 40/04 (2006.01) A61K 7/32 (2000.01) A61K 7/38 (2000.01)

Patent

CA 2396538

Antiperspirant products comprise a dispensing container for a soft solid having a narrow aperture through which its contents can be dispensed. The contents comprise a particulate antiperspirant active suspended in a water- immiscible liquid which has a refractive index that differs from that of the antiperspirant active by preferably not more than 0.08. By controlling the liquid and solid phase refractive indexes to within such a difference, it is possible to dispense a ribbon of soft solid through the narrow aperture which has a translucent appearance, even if the gross formulation within the dispenser is opaque. Particularly desirably, the refractive indexes differ by at least 0.01 or 0.02 to 0.06, in order to additionally avoid formulation constraints that would apply in respect if the liquid and suspended active had to be exactly matched.

L'invention porte sur des produits anti-sudoraux en crème épaisse contenus dans des flacons présentant une ouverture étroite de distribution, et dont le contenu est un anti-sudoral particulaire en suspension dans un liquide non miscible à l'eau présentant un indice de réfraction différant de celui du principe actif, de préférence de moins de 0,08. En maintenant la différence entre les indices de réfraction du liquide et de la phase solide, dans ces limites, on peut distribuer par l'ouverture étroite un ruban de crème épaisse apparaissant translucide même si la préparation brute contenue dans le flacon est opaque. Il est particulièrement désirable que la différence entre les indices de réfraction soient au plus comprises entre 0,01 ou 0,02 et 0,06, pour éviter les contraintes d'élaboration de la préparation, si les indices de réfraction du liquide et du principe actif avaient du être parfaitement identiques.

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