John Masters Organics Overnight Hair Mask with Plant-Based Keratin & Crambe Abyssinia is an advanced, vegan hydrating hair mask that combines innovative ingredients to help transform the health, strength, and suppleness of your hair. At the heart of the formula is Plant-Based Keratin which delivers vegan proteins to help repair the hair cuticle and prevent future breakage. Hair looks and feels refreshed with each overnight use and is perfectly hydrated for your styling steps that follow. When used with our daily nourishing line, it is a complete haircare regimen suitable for all hair types.