Living Proof Full Thickening Mousse
An ultra, lightweight mousse that provides flexible volume to help fine, flat hair to look, feel and behave like naturally full, thick hair. It is powered by our patented Thickening Molecule (PBAE), which creates thickening dots between hair strands so it feels like you have thicker hair. PBAE lasts 5x longer. Full Thickening Mousse: 

provides long lasting thickness and fullness 
light hold that doesn't collapse or become stiff

Full Thickening Mousse is ideal for fine, flat hair. It is silicone-free. Safe and formulated for color and chemically treated hair.