Glycolic Gloss Shampoo repairs the hair fiber and gives shine. Healthy-looking hair is shiny because its smooth surface perfectly reflects light. On the other hand, damaged hair has a ruined cuticle and the fiber is rough, porous, and dull, unable to reflect light. Our first at-home Gloss Treatment, powered by Glycolic Acid, repairs the fiber from within, intensely improving hair quality and sealing the cuticles for lasting shine. Quantity: 200ml.