our new toughness boosting system, infused with biotin, helps reinforce for significantly less weak and brittle sensation nails. the result: a wonderful manicure on account of powerful nails more proof against peeling, chipping & breakage.Vi?c ch?n ??a ch? cung c?p ??ng ph?c spa uy tín và ch?t l??ng ?óng vai trò quan tr?ng trong vi?c ??m b?o s?