Prepare hair for styling with Paul Mitchell Neuro Prime Heat CTRL™ Blowout Primer; a lightweight, non-greasy formula that delivers advanced thermal protection to protect strands from heat damage. Powered by breakthrough Heat CTRL™ technology, the hair primer helps to reduce the rate of heat transfer from roots to ends when using styling tools. Simply apply to clean, damp hair to achieve a sleek, smooth finish with salon-worthy shine. Not tested on animals.