- A gentle, yet thoroughly cleansing shampoo that helps to transform fine, flat hair to look, feel and behave like naturally full, thick hair. Powered by our patented Healthy Hair Molecule (OFPMA), Full Shampoo is the first step to: removing residue for natural fullness and body; helping to repel dirt and oil to keep hair cleaner, longer; preparing hair for maximum fullness. Full Shampoo is ideal for fine, flat hair. It is sulfate-free and silicone-free. Safe and formulated for color and chemically treated hair. Living Proof shampoos, outside of the non-lathering Curl Cleansing Conditioner, are all sulfate-free and carefully designed to gently cleanse with a rich, creamy lather. Apply Full Shampoo to wet hair. Massage into a rich lather, focusing on the roots. Rinse. Follow with Full Conditioner.