FIELD: cosmetology.
SUBSTANCE: group of inventions relates to the cosmetic industry, specifically to methods and a kit for treatment and / or nail care. According to one of methods: a) applying a photo-crosslinkable composition C1 containing a photo-crosslinkable urethane(meth)acrylate in a physiologically acceptable medium, a film-forming polymer P1 (10 wt. % or more of the dry C1 composition), a volatile solvent S (30 % or more of the weight of the composition C1) and a photoinitiator; b) subjecting the nail to UV radiation or visible light to obtain a cross-linked layer C'1; c) applying a photo-crosslinkable composition C2 containing a physiologically acceptable medium photo-crosslinkable urethanedi(meth)acrylate (65 wt. % or more of dry composition C2) and a volatile solvent S'; d) subjecting the nail to UV radiation or visible light to obtain a cross-linked layer C'2, where the urethane(meth)acrylate and urethanedi(meth)acrylate is a compound of formula 
(R1, R2 group 
; R3, R4, R5 methyl group).
EFFECT: group of inventions provides a coating having stability, homogeneity and luster.
42 cl, 2 ex, 3 tbl
