The latest evolution in Brazilian Keratin Straightening Treatments.100% colour safe KeraStraight is suitable for all hair types from virgin, untreated hair to highly damaged and weak. This evolution in straightening and repair will deliver beautifully shiny, straight & healthy hair. Keratin is a natural compound found in hair, skin and nails and it is this protein that gives your hair its strength. This ‘liquid hair’ blends with the hair on your head dramatically improving it’s quality on both the inside cortex and the outside cuticle layers. Smaller keratin molecules penetrate the cortex improving and repairing the quality of the hair from the inside. This adds strength, elasticity and moisture resulting in smooth, soft, shiny and straight hair.. The larger keratin molecules coat the hair cuticle and protect against environmental effects such as UV rays, smog, and smoke. Further damage to the hair shaft is thus prevented.