[Problem] To provide a cosmetic base material and a cosmetic containing said cosmetic base material, whereby damaged hair exhibits hydrophobic properties, smoothness, and combability. [Solution] A cosmetic base material is formed from an acylpeptide aliphatic acid amide-amine salt in which a portion or all of an acylpeptide acidic functional group in which a substituent represented by general formula (I) is bound to a peptide active amino group is neutralized in an aliphatic acid amide-amine represented by general formula (II). (In formula (I), R 1 represents -CH 2 CH 2 -, -CH=CH-, or -C 6 H 4 -.) (In formula (II), R 2 represents a C 11-25 saturated or unsaturated chain hydrocarbon or a C 11-25 saturated or unsaturated cyclic hydrocarbon, R 3 represents a C 1-3 alkylene group, and R 4 and R 5 each represent a C 1-3 alkyl group.) A cosmetic is formed by containing said cosmetic base material.
