GK Moisturizing Shampoo The GKhair Moisturizing Shampoo is made from natural seed oils, plant and grain extracts that work to gently cleanse dry and damaged hair. It strengthens each hair strand with natural proteins and provides hydration and soothing effects. It also offers color protection and contains Juvexin, a keratin anti-aging protein blend that restores hair from the inside out, returning it to a more youthful state.