Liss Expert Professional Stem Cells Smoothing Treatment 250 ml (Shoulder Length) — Organic Keratin & Argan Oil, Formaldehyde-Free

Liss Expert Stem Cells Smoothing Treatment is a professional-grade, formaldehyde-free keratin system enriched with plant stem cells and argan oil that smooths frizz, repairs damage, and delivers salon-quality straightness lasting up to 12 weeks.

This 250 ml (8.45 oz) formula from Liss Expert Professional blends organic keratin, argan oil, collagen and plant-derived stem cells to hydrate and strengthen hair while reducing frizz and improving shine. Designed for at-home or salon use, the treatment requires heat sealing (titanium flat iron recommended) to lock in results. The concentrated size is intended for one shoulder-length application and is suitable for a wide range of hair textures seeking longer-lasting smoothness without formaldehyde.

How does this treatment rebuild and protect stressed hair?

The formula combines keratin proteins with collagen and nourishing oils to replenish structural proteins lost to chemical processing, heat, or environmental damage. Plant stem cell extracts support scalp health and may help create a stronger environment for hair growth, while argan oil restores softness and reduces breakage.

• Organic keratin repairs cuticle damage and adds tensile strength.
• Collagen improves elasticity and reduces snap-off from brushing.
• Argan oil seals moisture and increases surface shine without greasiness.
• Plant stem cells contribute antioxidant and conditioning support.

What results can I expect and how long will they last?

When applied according to the enclosed instructions and sealed with a high-heat flat iron, results typically include smoother, shinier, and more manageable hair that resists frizz. Individual longevity depends on hair porosity, washing frequency, and aftercare products, but many users see up to 12 weeks of improved texture and reduced frizz.

• Sleek, frizz-controlled hair that’s easier to style for weeks.
• Improved surface gloss and reduced flyaways after one treatment.
• Best durability when using sulfate-free shampoos and minimal clarifying washes.
• Titanium flat iron recommended to properly seal the treatment for maximum lifespan.

How do I apply it safely at home for best results?

The system follows a three-step application designed to be straightforward: cleanse, apply the smoothing treatment, then heat-seal with a flat iron. Precise timing, even application, and careful heat technique are essential for consistent results; always follow the included guide and work in small sections.

• Use a clarifying shampoo first to remove residue and open the cuticle.
• Apply evenly to damp hair, avoiding the scalp to prevent irritation.
• Blow-dry completely before flat ironing; seal each 1-cm section with several passes at the recommended temperature.
• Follow manufacturer’s timing and avoid water contact during the initial curing period.

Is this treatment safe for color-treated or chemically processed hair?

Liss Expert is formulated to be formaldehyde-free and to work on a variety of treated hair types, including color-treated and relaxed hair, when used as directed. Because every chemical history is unique, perform a strand test first and consult your stylist if hair has excessive damage or multiple chemical services.

• Suitable for colored, highlighted, or chemically relaxed hair with proper testing.
• Strand test recommended to confirm compatibility and expected outcome.
• Use gentle, sulfate-free maintenance products to prolong results.

Who is this for: Liss Expert Stem Cells Smoothing Treatment is aimed at anyone with shoulder-length hair seeking a salon-quality straightening option at home or in a professional setting—especially those wanting formaldehyde-free keratin smoothing, visible frizz control, enhanced shine, and a single-treatment option for healthier-looking hair. It’s best for users willing to follow step-by-step application and heat-sealing instructions for long-lasting, manageable results.

Ingredients

Collagen