| abstract |
(57) [Summary] [Objective] To provide a stable and safe melanin production inhibitor and an external preparation for skin, which are excellent in whitening effect and preventive / ameliorating effect of pigmentation. [Structure] The melanin production inhibitor is 3-methyl-3-hydroxy-5- (2,2,6-trimethyl-1-yl- Cyclohexane) pentane, 3-methyl-1-hydroxy-5- (2,2,6-trimethyl-1-yl-cyclohexane) pentane, 3-methyl-5- (2,2,6 -Trimethyl-1-yl-cyclohexane) pentane, 3-Methyl-1-hydroxy-5- (2,2,6-trimethyl-1-yl-cyclohexane) -3-pentene, 3-methyl-3-hydroxy-5- (2,2,6 -Trimethyl-1-yl-cyclohexane) -1-pentene, 3-methyl-1-hydroxy-5- (2,2, 6-trimethyl-1-yl-cyclohexane) -2-pentene, and the skin external preparation contains this melanin production inhibitor as an active ingredient. |