A genius solution that allows you to style and treat in one step. Powered by our patented Healthy Hair Molecule (OFPMA) and our Thickening Molecule (PBAE), Perfect hair Day (PhD) 5-in-1 Styling Treatment: delivers the five benefits for beautiful healthy looking hair in one easy step - smoothness, volume, conditioning, strength and polish styles and treats without compromising one for the other Perfect hair Day (PhD) 5-in-1 Styling Treatment is ideal for all hair types. It is silicone-free. Safe and formulated for color and chemically treated hair.