CONDITIONING KERATIN HAIR MASK – Expertly formulated to restore, nourish and strengthen hair, this premium hair treatment mask by Natural Formula contains keratin, a fibrous protein that gives your hair its structure. ADVANCED KERATIN FORMULA – The Natural Formula Keratin Deep Conditioning Mask acts as soon as you apply it to your hair, rebuilding and restoring the structure of the hair to renew elasticity, hair-shine and softness. This mask hair treatment will help provide extra moisture as well as detangle strands, which can help make styling easier. RETAINS HAIR STRAIGHTENING RESULTS – Enriched with pentanol, which enhances the effects of keratin, this hair straightening mask retains hair-straightening results 3 times longer. Increases the hair’s durability to breakage, heat and chemical damages.