Strength and elasticity are 2 of the defining qualities of healthy hair. Strong hair can better withstand frequent combing and styling forces that can otherwise damage or break hair. Increasing the elastic nature of the hair fibre can improve its resiliency and allow it to stretch during styling. Ktein Natural 100% Plant Derived Keratin Conditioning Hair Mask is perfect choice for you to strengthen, moisturize, hydrate and nourish your hair as the keratin present in it is Plant Derived.