Evolution Keratin Hair Smoothing Treatment is a revolutionary treatment that softens, smoothes, straightens and takes away the frizz and, most importantly, gives you strong, radiant hair. Evolution Keratin is the only Hair Smoothing Therapy Line infused with natural argan oil, vitamins and proteins activated by dual performance formulas with exclusive technology for greater keratin absorption. This pioneering Hair Smoothing Therapy Line restores damaged and chemically treated hair to its natural state.