Liss Expert Professional Stem Cells Smoothing Treatment — 8.45 oz Single Shoulder-Length Kit with Organic Keratin & Argan Oil

Liss Expert Stem Cells Smoothing Treatment is a professional, formaldehyde-free smoothing system that blends organic keratin, argan oil and hyaluronic acid to reduce volume, tame frizz and add reflective shine for one shoulder-length application.

This concentrated smoothing kit from Liss Expert Professional is formulated to discipline unruly strands while maintaining softness and movement. The odorless formula combines organic keratin to strengthen and restructure, argan oil to restore luster, and hyaluronic acid to hydrate, plus UV protection for color-safe finishing. The kit includes an 8.45 oz treatment — calibrated for a single shoulder-length application — along with salt-free shampoo and conditioner to extend results and protect the new hair alignment.

How does this treatment reduce volume and control frizz?

The formula works by smoothing the hair cuticle and aligning fibers so hair lies flatter and resists humidity-induced puffiness. Organic keratin supplies building blocks to reinforce weak areas, while argan oil and hyaluronic acid help retain moisture without weighing hair down. Results show reduced volume and improved manageability after a single professional application.

• Organic keratin rebuilds and smooths strand structure
• Argan oil adds shine and reduces surface friction
• Hyaluronic acid hydrates internally for pliability
• UV protector helps preserve color and shine

What makes this a professional straightening solution?

Liss Expert Stem Cells Treatment is designed for in-salon application with clear dosing for one shoulder-length service, delivering controlled straightening without formaldehyde. The protocol pairs the treatment with salt-free shampoo and conditioner to lock in effects and extend longevity. It’s intended for licensed stylists seeking a reliable, odorless option that disciplines hair while keeping natural movement.

• 8.45 oz concentrate calibrated for a single shoulder-length application
• Odorless formula ideal for salon comfort
• Formaldehyde-free chemistry for safer handling
• Comes with salt-free shampoo and conditioner for aftercare

Can it be used on different hair types and textures?

The treatment is formulated to be versatile across straight, wavy, curly and coily hair, offering volume control and improved slip regardless of texture. Stylists can adjust processing and flat-ironing techniques to achieve subtle smoothing or more pronounced straightening. Because it also stimulates better strand resilience, it’s often used on chemically treated or heat-styled hair to restore harmony and shine.

• Suitable for all hair types and textures
• Customizable results via professional technique
• Helps manage chemically processed or heat-damaged hair
• Enhances shine and movement without stiffness

How long do results last and what aftercare is recommended?

Longevity varies with hair porosity, lifestyle and aftercare, but pairing the treatment with the included salt-free shampoo and conditioner helps extend smoothness and shine. Avoiding strong saline products and using sulfate-free maintenance keeps the cuticle aligned. Regular touch-ups and professional guidance ensure predictable, long-lasting outcomes.

• Use supplied salt-free shampoo/conditioner to maintain effect
• Avoid high-salt formulations and clarifying sulfates
• Expect variable duration depending on hair and care routine
• Consult a stylist for optimal timing between treatments

Who is this for: Liss Expert Stem Cells Smoothing Treatment suits salon professionals and clients seeking a formaldehyde-free, odorless smoothing service that reduces volume and increases shine. It’s ideal for shoulder-length hair receiving a single application, for people wanting frizz control without sacrificing movement, and for anyone wanting a treatment that pairs with gentle, salt-free aftercare. If you want a controlled, professional straightening option that also nourishes and protects hair from UV stress, this kit is formulated for that purpose.

Ingredients

Collagen