The present invention is directed to the use, in particular cosmetic use, of an effective amount of at least one lacritin-type polypeptide, of an analogue thereof or of a fragment thereof, of at least one nucleic acid sequence encoding this polypeptide, or of at least one agent that modulates the activity, the stability or the expression of this polypeptide, or its interaction with syndecan-1, as an agent useful for the care of the skin and of appendages thereof.