This fomula contains our patented Thickening Molecule (PBAE), which creates thickening dots between hair strands so it feels like you have thicker hair. The result: It gives your hair long-lasting body and fullness with light hold that doesn't collapse or become stiff. Provides light hold and heat protection (up to 320°F/160°C) Ideal for fine, flat hair. Color safe and safe for chemically treated hair.