Liss Expert Professional Stem Cells Smoothing Treatment 2×250ml (Shoulder) - Organic Keratin & Argan Oil

Liss Expert Professional Stem Cells Smoothing Treatment is a salon-grade keratin system with argan oil and plant stem cells that smooths, restores shine and helps reduce frizz for up to 12 weeks when sealed with heat.

This two-bottle kit (2 × 250 ml, shoulder length) combines organic keratin, argan oil, collagen and plant-derived stem cell actives into a formaldehyde-free straightening and repair formula designed for at-home or professional use. The formula focuses on deep hydration, fiber repair and long-lasting manageability while aiming to minimize buildup. Proper application and heat sealing with a flat iron are essential to achieve the promised smoothness and durability.

How does this treatment improve frizz and manageability?

The keratin and argan oil components fill and smooth the hair cuticle, reducing surface friction that causes frizz. Collagen and moisturizing actives boost flexibility and softness, so hair feels easier to comb and style after treatment. Consistent use or repeat treatments can improve overall texture and reduce daily styling time.

• Organic keratin smooths and reinforces hair fiber.
• Argan oil restores shine and reduces static.
• Collagen and humectants add pliability and hydration.
• Heat sealing with a flat iron locks the result for up to 12 weeks.

What steps are required for safe, effective application?

The system follows a simple three-step routine: cleanse, apply treatment, then seal with heat. Thoroughly shampoo to remove oils and residue, apply the formula evenly, and use a titanium flat iron at the recommended temperature to activate and lock the treatment. Following the included guide precisely ensures consistent, long-lasting results and reduces product waste.

• Step 1: Deep cleanse hair to open the cuticle.
• Step 2: Evenly apply treatment from roots to ends; comb through.
• Step 3: Blow-dry and flat iron small sections to seal the formula.
• Tip: Use recommended temperatures and follow timing instructions closely.

Is this formula safe for colored or chemically treated hair?

The formula is formaldehyde-free and designed to be compatible with a variety of hair conditions, including color-treated and previously relaxed hair. Because it contains strengthening and hydrating actives, it can help smooth and revive chemically processed strands, but a strand test is always recommended. Consult a stylist if you’ve recently had chemical services to pick ideal timing and temperature settings.

• Formaldehyde-free for gentler smoothing action.
• Suitable for color-treated hair with a prior strand test.
• May enhance shine and reduce breakage on damaged hair.
• Professional consultation advised after recent chemical treatments.

How long do results last and what maintenance is needed?

When applied and sealed correctly, results can last up to 12 weeks depending on hair porosity, washing frequency and aftercare products. Use sulfate-free shampoos and limit excessive heat to prolong the effect. Touch-ups or a repeat treatment are optional once smoothing begins to fade.

• Durability: up to 12 weeks with correct application.
• Aftercare: sulfate-free cleansers and gentle conditioners.
• Maintenance: minimize frequent washing to extend longevity.
• Renew: reapply as needed based on hair regrowth and wear.

Who is this for? Liss Expert Professional Stem Cells Smoothing Treatment is designed for people seeking long-lasting frizz control and smoother, shinier hair—suitable for naturally curly, wavy, frizzy or chemically treated hair. It fits home users comfortable with a heat-sealing step and professionals wanting a formaldehyde-free keratin option. If you want significant reduction in daily styling time and salon-style sleekness without harsh aldehydes, this kit offers a practical, multi-ingredient approach.