F-LAYER Deep Conditioning SerumGreat hair starts here. This traceless serumthe first step post showerreplenishes the all important F layer: the protective lipid layer that locks in moisture and gives hair its natural smoothness, gloss, and ability to reflect light. Weightlessly hydrates, repairs, and preps hair for styling thanks to vitamin and mineral rich Fruit Water Extracts and the nourishing Oil Botanical Blend. After a single use: 36% Less breakage & hair fiber abrasion* 88%