Preparation for external use on skin

Details Preparation for external use on skin Preparation for external use on skin

A - Human Necessities

61

K

A61K 31/375 (2006.01) A61K 47/10 (2006.01) A61K 47/18 (2006.01) A61K 7/42 (2000.01) A61K 7/48 (2000.01)

Patent

CA 2508095

The present invention has as an object to provide a preparation for external use on skin in which a water-soluble ascorbic acid can be stably dissolved. By blending a low molecular weight betaine in a preparation for external use on skin including a water-soluble ascorbic acid and a glycol ether or a specific polyhydric alcohol, the water-soluble ascorbic acid can be stably dissolved. For this reason, a preparation for external use on skin in which a water-soluble ascorbic acid can be blended in a high concentration can be produced, and therefore, the various effects which ascorbic acid inherently possesses can be effectively exhibited depending on the blending amount thereof. In addition, a preparation which does not give a sticky sensation after applying to the skin, provides a moisturizing sensation, and provides good fitness to the skin, can be produced.

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