Regenerates The intensive overnight mask designed to repair and strengthen severely damaged nails. Its unique formula, highly concentrated in emollients and fortifying agents, forms a protective film on the nail surface, stimulating cell repair while you sleep. After two weeks, nails are harder, fully hydrated, and visibly stronger. Benefits Its high concentration of emollients and fortifying agents—essential for nail health and beauty—enhances long-term resistance to daily aggressions. Apply in the evening and leave on overnight for a deep treatment. How to use it? Apply a thick layer of the S.O.S Mask to clean nails, just like a nail polish.