Strengthen and protect hair with Bumble and bumble Hairdressers Invisible Oil Heat/UV Protective Primer, a heat protection spray that nourishes from root to tip. Powered by a multitude of conditioning ingredients, the primer forms a defensive barrier against the damage caused by hair straighteners, curlers and blow-drys in order to prevent breakage and dehydration. The invisible spray softens strands, replenishes moisture and tames frizz for a healthy, smooth and sleek finish. Suitable for all hair types.