The invention relates to topical agents used for treating nail diseases and nail care containing besides one or several active substances and possibly adjuvants and solubilisation physiologically tolerable agents, one or several compounds of formula (I): R-O-R1, wherein R is a linear or branched alkyl group comprising 5-8 carbon atoms and R1 is hydrogen, a formula or acetyl group. The inventive agents are also appropriate for veterinary medicine for treating fungal infections of hooves and nails of domestic and working animals.