Powered by Living Proof\'s patented Healthy Hair Molecule (OFPMA) and Triple-Action Cleaning Technology, Living Proof Perfect Hair Day (PhD) Dry Shampoo cleans beyond ordinary dry shampoos. Key Features and Results: - Absorbs and removes oil, sweat and odour. - Makes your hair look, feel and smell clean. - Works on all hair colours because it leaves virtually no visible residue or powdery build-up behind. - Has a time-released fragrance to deliver a light, clean scent throughout the day. - Safe and formulated for colour and chemically treated hair. - Ideal for all hair types. Perfect hair Day (PhD) Dry Shampoo is silicone-free.