Its formula fortified with Keratin, penetrates deeply into the three layers of the hair fiber, rebuilding it from the inside out. Collagen controls hydration, preventing frizz.

After using IYOSEI shampoo and conditioner, apply the mask to damp hair.

Distribute by massaging gently, concentrating its application on the ends.

Let it act for 5 minutes.

Rinse with warm water.