The Heat/UV Protective Primer mists over the hair, creating a protective but invisible layer to condition, hydrate and reinforce the hair. Protects the hair against frizz, heat and UV damages without weighing it down. Suitable for medium to thick, straight to curly, dry, damaged and colour treated hair. To use: Apply daily to damp hair, distributing throughout the hair. All Bumble and bumble products are free from parabens, phthalates, mineral oils, and formaldehyde. Bumble and bumble is also a cruelty free brand, never tested on animals.