Sarah K Professional Hair So Liss Deep Clean Shampoo – Step 1 (1000ml)

Keratin shampoo | Pre-treatment deep clean | Professional hair treatment

Introduction

The Sarah K Professional Hair So Liss Deep Clean Shampoo is the essential first step in any Brazilian keratin or smoothing treatment. Its clarifying formula removes buildup, opens the cuticle, and prepares the hair fiber for maximum absorption of Step 2 keratin actives.

What is it?

This professional pre-treatment clarifying shampoo deeply cleanses the hair before keratin application. By purifying the strands, it ensures the keratin treatment penetrates evenly and delivers long-lasting smooth results.

Formula & Key Ingredients

• Aloe Vera – Provides soothing, hydrating action while protecting the scalp
• Sodium Laureth Sulfate – Ensures deep cleansing to remove buildup, oils, and residues
• Multiple Surfactants – Work together to open the cuticle and prepare hair for Step 2 penetration
• Citric Acid – Helps maintain optimal pH balance during preparation

Main Benefits

• Removes impurities, oils, and buildup
• Prepares hair for keratin treatment absorption
• Balances scalp and hair pH
• Opens cuticles for deeper penetration of Step 2
• Enhances treatment longevity and smoothness

Who is it for?

Exclusively designed for professional hairdressers performing keratin treatments. Recommended for:

• Clients with curly and frizzy hair
• Bleached, color-treated, or chemically processed hair
• Those seeking long-lasting smoothness and shine

Professional Application Protocol

1. Wash hair thoroughly with Sarah K Professional Hair So Liss Deep Clean Shampoo (Step 1), rinse well. Repeat if needed.
2. Dry hair completely with a professional blow dryer.
3. Divide hair into sections using clips and a fine-tooth comb.
4. Apply Sarah K Professional Hair So Liss Progressive Straightening Treatment (Step 2) strand by strand with a tint brush and professional bowl, ensuring full saturation.
5. Allow the treatment to process for 15–20 minutes.
6. Blow dry hair again until completely dry.
7. Flat iron each section at 190–230°C, passing the straightener 20–30 times to seal the treatment into the hair cuticle.
8. Rinse thoroughly until all product is removed. 
9. Apply a neutralizing mask for 15 minutes, rinse, and finish with desired styling.

Recommended Professional Tools: Professional blow dryer, ceramic/tourmaline flat iron (temperature adjustable 190–230°C), application bowls, tint brushes, fine-tooth combs, and sectioning clips. 

Explore our collection of professional hair dryers.

Explore our collection of professional clips, combs and bowls.

Explore our collection of professional flat irons.

Complete the Therapy Line

Complete 2-Step System Breakdown

• Step 1: Sarah K Professional Hair So Liss Deep Clean Shampoo
  Function: Preparatory deep cleansing shampoo with Aloe Vera.
  Purpose: Removes buildup and oils, opens cuticles for maximum Step 2 penetration.
  Key Ingredients: Aloe Vera, Sodium Laureth Sulfate, Multiple Surfactants.
• Step 2: Sarah K Professional Hair So Liss Progressive Straightening Treatment
  Function: Progressive keratin smoothing treatment with Keratin and Whey Protein.
  Benefits: Semi-permanent straightening (3–6 months), frizz reduction, enhanced shine, hair strengthening.
  Key Ingredients: Hydrolyzed Keratin, Whey Protein, Formaldehyde-free formula.

How the System Works Together

Step 1 Preparation: Deep clean shampoo removes all barriers and prepares hair cuticles.
Step 2 Treatment: Keratin and proteins penetrate opened cuticles for deep repair and smoothing.
Heat Activation: Hair is processed at 190–230°C, 20–30 passes per section to seal the treatment.

Summary

The Sarah K Professional Hair So Liss Deep Clean Shampoo Step 1 (1000ml) is the foundation of a complete 2-step keratin system. It primes the hair by removing impurities and opening cuticles, ensuring maximum effectiveness of Step 2 for semi-permanent smoothness, shine, and strength.