Revitalizing smoothing treatment, it protects the hair from breakage and heat. Design Essentials STS EXPRESS Smoothing System Thermal Therapy Leave-In Sealant is an intensely hydrating leave-in conditioner designed to restore hair's moisture balance while providing long-lasting protection against heat and environmental damage. Enriched with antioxidants, this conditioning smoothing treatment seals the cuticle for a soft, shiny finish, promotes stronger, healthier hair with anti-frizz protection and long-lasting shine.
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