Bumble and bumble's While You Sleep Masque is an overnight restorative mask that helps reverse the appearance of damaged hair for silky, destressed strands.BenefitsFortifies hair and reduces breakageNourishes and repairs damageRestores and repairs hair's healthy look and feelCruelty-freeKey IngredientsEvening Primrose: helps repair past wear-and-tear and fortify against future damageFormulated WithoutParabensPhthalatesMineral OilFormaldehyde Suggested Use: Apply on dry hair once or twice a week. For deep nourishment, leave on overnight and wash out with your favorite Bb. shampoo and conditioner. After cleansing, use Save the Day Daytime Damage Repair Fluid for around-the-clock repair. Bb. stylist tip: For a quick reparative boost, instead of using overnight, you can choose to shampoo the mask out after 20 minutes. UPC: 000002523782 Weight: 0.88 lbs