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. Use Advanced Climate Control Heat & Humidity Gel to seal every strand, lock in moisture, and lock out humidity. Wheat Protein and pliable styling polymers form a weightless flexible lattice that expands as heat or humidity rises to hold curl definition without frizz. This high-performance Anti-Frizz Nano Technology with a protein derived from silk seals the cuticle to keep essential moisture in and humidity out. A dedicated UV filter helps protect against damage from environmental aggressors. The result: Flexible hold that won't leave hair crunchy, sticky, or weighed down. Frizz-free, perfectly defined curls-in any climate