Humidity: It's every curl’s nightmare. That's because curly hair’s unique structure exposes its cuticle. When humidity gets in, curls expand with unwanted volume and look frizzy, undefined, and dull. Ouidad Advanced Climate Control® Heat & Humidity Gel – Stronger Hold transforms uneven curl patterns into consistently formed, well-defined and frizz-free spirals. Anti-Frizz Nano Technology seals the cuticle to lock in moisture and lock out humidity. A dedicated UV filter helps protect against damage from environmental aggressors. The result: Defined, shiny, controlled curls – in any climate.