Oil-in-water emulsion with improved stability

Details Oil-in-water emulsion with improved stability Oil-in-water emulsion with improved stability

A - Human Necessities

61

K

A61K 6/00 (2006.01) A01N 25/00 (2006.01) A01N 43/50 (2006.01) A61K 8/06 (2006.01) A61K 8/37 (2006.01) A61K 8/46 (2006.01) A61K 8/49 (2006.01) A61K 8/73 (2006.01) A61K 8/81 (2006.01) A61K 8/86 (2006.01) A61K 8/92 (2006.01) A61K 8/97 (2006.01) A61K 47/20 (2006.01) A61Q 19/00 (2006.01)

Patent

CA 2378372

A skin cream composition containing allantoin and an emulsifier has improved stability coming from the adjustment of the pH to a range of 3.0 to 6.0; preferably, the pH is in the range of 4.5 to about 5.8. The lower pH preserves the stability of the allantoin and the functionality of the emulsifier system is maintained. The emulsifier system can be a nonionic emulsifier or an anionic emulsifier plus beeswax. The acid used to adjust the pH can be an organic acid or an inorganic acid. The composition can further comprise other ingredients such as herbal extracts, chelating agents, preservatives, emollients, solvents, and fragrance.

L'invention concerne la composition d'une crème pour la peau contenant de l'allantoïne et un agent émulsifiant et présentant une stabilité améliorée grâce à l'établissement du pH dans une fourchette variant entre 3,0 et 6,0, de préférence entre 4,5 et environ 5,8. Un pH faible permet de conserver la stabilité de l'allantoïne et de maintenir la fonctionnalité du système émulsifiant. Le système émulsifiant peut être un agent émulsifiant non ionique ou un agent émulsifiant anionique associé à de la cire d'abeille. L'acide utilisé pour abaisser le pH peut être un acide organique ou un acide inorganique. La composition peut également contenir d'autres ingrédients, tels que des extraits d'herbes, des agents chélateurs, des agents de conservation, des émollients, des solvants et un parfum.

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