Bumble & Bumble Thickening Go Big Plumping Hair Treatment Spray is a powerful leave-in for fuller-looking hair that has a moisturizing, nourishing effect. The leave-in protects the hair against heat, prevents hair breakage and reduces frizz. It also has heat protection. .The leave-in is suitable for fine to medium hair and is enriched with a moisturizing mix of wheat proteins and starch. The formula also contains a Brazilian nut protein that helps revitalize the hair....The volume spray is cruelty free and free of parabens and harmful substances.