Abstract: The object of the invention is a composition for the local treatment of the epidermis comprising at least two active constituents, characterized in that one of these constituents is a product resulting from the condensation of N-methyl-p-methoxyphenethylamine with formaldehyde or product of the aromatic polyamine-type. It particularly relates to a composition for treating the scalp, particularly for treating alopeciae and alopecia aerata or pelada comprising, as second active constituent, a placental extract containing proteinic compounds and sulfurized amino acids. Application to the treatment of the epidermis, particularly of the scalp.