Design Essentials STS Express 3 Thermal Therapy Leave-in Sealant 8oz

Achieve flawless heat styling with lasting smoothness using Design Essentials STS Express Thermal Therapy Leave-In Sealant. This 8oz treatment is designed to lock in moisture, seal the hair cuticle, and provide long-lasting protection from heat damage — making it the perfect pre-step for blowouts, flat ironing, or silk presses.

Part of the STS Express Smoothing System, this leave-in sealant delivers frizz-free results while maintaining body, bounce, and natural movement. It’s ideal for natural, transitioning, or relaxed hair in need of protection and polish.