What it is: An innovative dual-action pre-shampoo treatment that visibly reverses hair damage*, repairs bonds & removes calcium build-up, leaving hair 99% stronger** and healthier. Apply in the shower, leave for 5 minutes, layer shampoo & rinse.Hair Texture: Straight and WavyHair Type: Fine, Medium, and Thick- Glycine: This amino acid penetrates hair's inner layer, dramatically reduces breakage, and helps to neutralize dullness, and stiffness.