What it is:Step 4 (Finish) styling aid in ghd's 4-step thermodynamics(TM) system: A non-sticky, quick-drying, fine mist aerosol hairspray with UVA protection for long-lasting hold with volume, movement, and flexibility.What it is formulated to do:Helps protect against humidity and static, while also helping to retain hair's moisture and elasticity during heat-styling.