STS Express Thermal Leave-In Sealant-Step 3


An intensely moisturizing leave-in conditioner:
designed to restore balance to hair.

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Design Essentials® STS EXPRESS Smoothing System Thermal Therapy Leave-In Sealant - Step 3 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.


  • 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

Key Ingredients

  • ANTIOXIDANTS & BOTANICALS promote strong, full hair

Usage Instructions

  1. After treating with Smoothing Mousse or Damage Recovery Anti-Breakage Treatment, spray sealant throughout hair to remove any residue and seal in treatment.
  2. Taking manageable subsections, starting at the back, blow-dry hair from root to ends until completely dry using a paddle brush.
  3. Taking 1/8-inch partings, flat iron hair using a temperature-controlled iron, passing 1 to 2 times from root to ends at 340ºF to 400ºF. Lower temperature recommended for fine, fragile or color-treated hair.
Aqua/Water/Eau, Glycerine, Cetyl Triethylmonium Dimethicone Sodium PCA, Methylisothiazolinone, Caprylyl glycol, Calendula Offi cianlis Flower Extract, Goldenseal (Hydrastis Candadensis) Lawsonia Inermis (Henna) Extract, Humulus Lupulus (Hops) Extract, Quillaia Saponaria Bark Extract, Matricaria Chamomilla (Chamomile) Oil, Hydroxylproplytrimonium Honey, Hydrolyzed Polysorbate 20, Fragrance (Parfum), Benzyl Benzoate, Citralo, Citronellol, Geraniol, Hexyl Cinnamal, Limonene, Linalool, Butylphenyl Methylpropional