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STS Express Thermal Therapy Leave-In Sealant—Step 3, 8 oz bottle. ​ An intensely moisturizing leave-in conditioner that restores moisture balance, provides long-lasting protection against heat styling and environmental damage, and promotes stronger, healthier hair with anti-frizz protection and shine.
STS Express Thermal Therapy Leave-In Sealant - Hair Reference Chart

Strengthening Therapy System

STS Express Thermal Leave-In Sealant Step 3

$27.00
Best for: 1A-4C Routine: Maintain Professional Use Only

Restore and protect. This restorative thermal leave-in conditioner locks in moisture, shields hair from heat styling and environmental stress, and delivers lasting smoothness, softness, and shine

Heat Protection
Frizz Control
Adds Shine
Straightens

Size:
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Pairs Well With

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STS Express Max Smoothing Mousse Step 2 From $78.00
STS Express Thermal Therapy Leave-In Sealant—Step 3, 8 oz bottle. ​ An intensely moisturizing leave-in conditioner that restores moisture balance, provides long-lasting protection against heat styling and environmental damage, and promotes stronger, healthier hair with anti-frizz protection and shine.
STS Express Thermal Therapy Leave-In Sealant - Hair Reference Chart

STS EXPRESS THERMAL THERAPY LEAVE-IN SEALANT

Is this Right for Me?

Professional Use Only: This product is intended for licensed cosmetologists and should be applied according to manufacturer instructions. Not recommended for consumer at-home use.
Great for: All hair types and textures, including straight, wavy, curly, and coily

Best used for: Sealing in smoothing and strengthening treatments before thermal styling

Leaves hair: Soft, protected, and shiny with reduced frizz

Key Ingredients

KERATIN AMINO ACIDS & PROTEIN

Repair, strengthen, and smooth hair to reduce breakage and boost shine.

Deionized Water, Glycerin, Maltodextrin/VP Copolymer, PEG-12 Dimethicone, Cetrimonium Chloride, Methyl Gluceth-10, Silanetriol, Panthenol, Phenoxyethanol, Benzoic Acid, Ethylhexylglycerin, Glycereth-2 Cocoate, Glyoxyloyl Carbocysteine, Glyoxyloyl Keratin Amino Acids, Fragrance, Limonene, Linalool, Benzyl Benzoate, Citronellol, Hexyl Cinnamic Aldehyde, Geraniol

Additional Information