| abstract |
PROBLEM TO BE SOLVED: To provide an anti-free radical agent for improving the appearance of skin, scalp, or hair having better anti-free radical activity than melatonin. The present invention provides a compound represented by the formula (I): (Wherein R 1 represents a lower alkyl group, R 2 represents H or a lower alkyl group, R 3 represents H or a lower acyl group, and the hydroxyl group of the indole ring can be at the 4, 6, or 7 position) An anti-free radical agent for improving the appearance of skin, scalp, or hair, comprising a melatonin derivative, a physiologically acceptable salt thereof, a sorbate, or a bioprecursor, and a composition containing the compound Products, as well as their uses. |