Bumble & Bumble Thickening Spray is a heat styling essential and blow-dry basic. Not just for fine hair. Bumble & bumble Thickening spray is a moderate hold setting spray that builds body and gives lift, control, and helps define curl. Just the right amount of hold gives direction, and tames frizz and flyways without feeling gummy. Polymers act as setting agents while Wheat Protein conditions, moisturizes and helps repair environmental damage.