Montagne Jeunesse Overnight Disappearing Ultra Firming Masque. Now you can look forward to another wonderful day, because our indulgent masque, rich in Marine Algae and Shea Butter works its magic overnight. While you sleep, natural ingredients help restore elasticity, aid your skin cells natural defence system, and firm and tighten. The masque will vanish overnight, leaving firmer, tighter skin. Suitable For Vegans. Gluten Free. Dairy Free. No Added Parabens.