| 摘要 |
PROBLEM TO BE SOLVED: To provide compounds which have an effect of ameliorating damaged hair and improving its tensile strength and resilience and can exert the effect for a long time.SOLUTION: A compound having a lactone structure at a terminal represented by the specified general formula (1) is used. (In the formula, n represents 1 or 2, and R represents a hydrocarbon chain comprising a C12-C35 linear, branched or cyclic structure, includes an ether linkage, amide bond or ester linkage, and is bonded to any carbon atom not included in the carbonyl group in the lactone structure.) |
