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STS EXPRESS Thermal Therapy Leave In Sealant

Design Essentials

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Design Essentials STS EXPRESS Thermal Therapy Leave In Sealant:

Step 4 is the Final Step. It is an intensely moisturizing leave-in conditioner designed to restore moisture balance to hair while providing long-lasting protection against heat styling and environmental damage. Infused with antioxidants and botanicals that work synergistically with the full STS treatment.

STS Express Smoothing and Strengthening System is an amino-acid infused smoothing and thermal therapy system that temporarily straightens and smooths frizzy, naturally curly, multi-textured, transitioning, and chemically treated hair—providing up to 12 weeks of intense smooth-ness, incredible shine, and maximum manageability.


• Seals the cuticle for a soft, shiny finish

• Promotes stronger, healthier hair with anti-frizz protection and long-lasting shine

• Designed for all hair types