Liss Expert Professional

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

High-performance beauty made for confident daily results

$76.93

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Why customers choose Origin Beauty

Liss Expert Stem Cells Smoothing Treatment is a professional-grade keratin system with argan oil and plant stem cells that smooths, hydrates and reduces frizz for up to 12 weeks when sealed with a flat iron.

Designed for at-home salon results, this 250 ml (8.45 oz) formula blends organic keratin, argan oil, collagen and plant-based stem cell actives to repair and rejuvenate hair strands. The product aims to improve manageability and shine while offering long-lasting straightening and reduced breakage. It’s formaldehyde-free and packaged for a single shoulder-length application, with step-by-step directions to maximize longevity.

How does this treatment change hair texture and manage frizz?

The keratin and argan oil work together to fill and seal the hair cuticle, creating a smoother surface that resists humidity and reduces frizz. Collagen and nourishing actives add elasticity and shine without weighing hair down. When heat-sealed properly, results can appear sleeker and more uniform across different hair types.

  • Keratin reconstructs and smooths damaged cuticles
  • Argan oil restores gloss and softness
  • Collagen adds pliability to brittle strands
  • Plant stem cells support scalp and fiber resilience

What is the application process and do I need special tools?

Application follows a three-step system: cleanse, apply treatment, and seal with heat. A titanium flat iron is recommended to properly lock the formula into the hair shaft and achieve the advertised duration. Following the included guide precisely ensures the best balance between performance and hair health.

  • Step 1: Clarifying shampoo to remove residues
  • Step 2: Evenly apply the treatment from roots to ends
  • Step 3: Blow-dry and flat iron in small sections for sealing
  • Recommended: titanium flat iron for durable results

How long do results last and how should I care for treated hair?

With correct application and heat sealing, expect smoother, frizz-reduced hair for up to 12 weeks. Longevity depends on hair porosity, washing frequency and aftercare products. Use sulfate-free shampoos, avoid salt water and chlorinated pools when possible, and space washes to extend the effect.

  • Results: up to 12 weeks with proper sealing
  • Aftercare: sulfate-free, gentle cleansing routines
  • Avoid frequent shampooing and aggressive styling
  • Touch-up or repeat treatment as hair grows out

Is this formulation safe for colored or chemically treated hair?

The formula is formaldehyde-free and designed to be compatible with dyed or previously processed hair when used according to instructions. Because each hair history is unique, perform a strand test before full application to check for desired compatibility and outcome.

  • Suitable for color-treated hair with a prior strand test
  • Free from formaldehyde and harsh aldehydes
  • Restores softness without heavy buildup
  • One 8.45 oz bottle covers shoulder-length hair

Who is this for: Liss Expert Stem Cells Smoothing Treatment is targeted to people seeking a salon-quality smoothing system at home—those with frizz-prone, textured, or chemically treated hair who want extended straightening, enhanced shine and stronger-looking strands. It’s ideal for users ready to follow a multi-step protocol and who can access a quality flat iron to seal results.

Ingredients

Collagen

FAQ

Q: How long until I see results?

A: You’ll notice reduced frizz and smoother texture after sealing with a flat iron; optimal results appear once the hair is fully heat-sealed.

Q: Can I use this on color-treated hair?

A: Yes, it’s formulated for color-treated hair, but perform a strand test first and follow instructions for best compatibility.