Coloured keratolytic nail lacquer

A liquid nail lacquer composition comprising a pharmaceutically active compound and an aqueous poly (urea-urethane) polymer dispersion for providing a film on a nail of a subject in need thereof, whereby said nail lacquer composition comprises an antimycotic agent, whereby said antimycotic agent is an organic acid selected from the group consisting of lactic acid, malic acid, tartaric acid, citric acid, formic acid, acetic acid, propionic acid, isopropionic acid, oxalic acid, glutaric acid, adipic acid, pyruvic acid and glycolic acid, and wherein said aqueous poly (urea-urethane) polymer dispersion comprises a film forming polymer, whereby said film forming polymer is comprised in said liquid nail lacquer composition in an amount of at least 25 wt. %, relative to the total weight of the composition, as determined according to DIN EN ISO 3251, characterized by further comprising at least one visual control agent in an amount of at least 0.01 wt. %, relative to the total weight of the composition, and at least one keratolytic agent in an amount of at least 0.01 wt. %, relative to the total weight of the composition, whereby said keratolytic agent is a C10-C14 alkyl ester of lactic acid, malic acid, tartaric acid and/or citric acid, wherein the liquid nail lacquer composition has a pH between 2.5 and 6.5, as determined according to DIN ISO 976, and wherein the liquid nail lacquer composition further comprises a plasticizer in an amount of at least 10 wt. %, relative to the total weight of the composition.