Advanced Clinicals Biotin Leave-In Treatment instantly repairs splits ends and nourishes frizz-prone hair. This leave-in treatment supports scalp health, leading to stronger and thicker hair.  Formulated with Biotin, it instantly smooths hair damaged by heat styling and physical stressors. This weightless spray fights fly-a ways and restores shine to damaged strands.  Formulated for all hair types. Paraben-Free, 100% Clean Beauty.