Kerastase Specifique Dermo-Calm Masque Sensidote (200ml) This Dermo-Calm Masque Sensidote from the Kerastase Specifique range is a wash out masque treatment that is designed to soothe the scalp & leave your hair feeling silky soft & refreshed. Designed to relieve the scalp of irritation this masque is an intense treatment that gives you immediate effects.