TRUSS High Liss 600ml

A polished salon smoothing ritual for sleeker-looking, frizz-controlled hair.

✦ Professional Thermal Smoothing

TRUSS High Liss is a professional thermal sealing treatment created for salon smoothing services. The formula is used to help reduce frizz, soften the look of excess volume, and seal the cuticle through a controlled application, heat processing, rinse, blow-dry, and flat-iron finish.

Designed for colored or virgin hair, this standard High Liss formula is described by manufacturer and retailer materials as formaldehyde-free and compatible with other chemical treatments when professional guidance is followed. Published guidance places expected longevity around 8–10 weeks, depending on the hair, service technique, and maintenance routine.

✦ Smooth-Service Benefits

✦ Key Ingredients

✦ How to Use

• 01For professional salon use. Shampoo twice with TRUSS Clarifying Shampoo, or use TRUSS Bidimensional Shampoo when the hair is fragile or damaged.
• 02Blow-dry hair completely. Apply evenly from nape to crown, keeping approximately 1/2 inch from the scalp, then cover with a plastic cap.
• 03Process under a hooded dryer according to hair type: about 30 minutes for thin or damaged hair, 45 minutes for medium hair, and 60 minutes for coarse or resistant hair. Rinse thoroughly.
• 04Brand guidance includes applying TRUSS Amino before the final finish. Blow-dry straight, then flat-iron in thin sections using professional temperature judgment for the hair condition.