Petite Maison Hair Mask Keratin Booster 20ml Restorative hair mask with keratin for damaged and weak hair. The concentrated restorative action of the keratin mask gives hair volume, nourishes and moisturizes after chemical treatments, and restores the natural beauty and smoothness of the hair. The package is for one use (20 ml), so it is very convenient to take it on trips or to the gym, etc. How to use: Apply to wet and clean hair 1 or 2 times a week. After waiting for 3-4 minutes, rinse well. Suitable for all hair types. For external use only. Avoid contact with eyes. In case of contact with eyes, rinse with plenty of water.