For natural and color-treated hair (levels 1–7)

This is an advanced therapeutic formula for straightening hair, while restoring its natural strength and vitality. Based on cysteine, keratin and essential amino acids, it works to restore and strengthen the hair fiber during the straightening process, leaving hair softer, smoother and healthier looking.

A new generation. Formula 2026
Gentle formula that does not damage natural or colored hair
Enriched with nourishing ingredients that restore hair health and vitality.
Smoothes the hair fiber and reduces frizz
Gives shine and gives hair a natural, healthy appearance.
Helps maintain hair color and prevents fading over time
Protects against heat, humidity and environmental damage
Reduces dryness and breakage for stronger, healthier hair
Supports scalp and hair health for long-lasting softness
Leaves hair smooth, manageable and easier to style

Step 1
Wash your hair twice with a neutral shampoo to open the hair fiber, then dry thoroughly.

Step 2
Divide the hair into four sections. Wear gloves when applying.

Step 3
Apply a generous amount of pH CYSTEINE+ to the hair, about 0.5 cm from the scalp, and comb through with a wide-toothed comb.
In the case of damaged hair, apply pH CYSTEINE+ only to the beginning of the damaged area, and gently pull the remaining substance on the comb towards the ends.

Step 4
Roll each quarter of the hair from the ends towards the roots into a spiral shape (like a snail), applying gentle tension, and secure with a clip.
Recommended stay time: 60–70 minutes.

Step 5
Rinse hair thoroughly with water only.

Step 6
Dry your hair completely.

Step 7
Smooth the hair fiber using professional smoothing techniques.

Step 8
Wash your hair with a salt-free shampoo, then apply a salt-free mask and leave on for 5–10 minutes. Rinse well and dry.

Step 9
Finally, apply a treatment serum to the hair.