| abstract |
PROBLEM TO BE SOLVED: To provide an external preparation for skin which has remarkably improved skin whitening effect, excellent moisturizing effect, and excellent stability and safety. SOLUTION: L-ascorbic acid and a derivative thereof, One or two selected from the group consisting of placenta extract, kojic acid and its derivatives, azelaic acid and its derivatives, glucosamine and its derivatives, hydroquinone glycosides and its derivatives, tranexamic acid and its derivatives, salicylic acid and its derivatives More than one species and Lumpuyan (Zingiber aromaticum (Zingiberaceae)) or a solvent extract thereof. |