Activilong Olive-Avocado Repairing Hair Mask 300 ml The nutrient-rich Repairing Treatment Mask is an ultra-nourishing treatment that penetrates into the heart of the hair to restructure it by filling in the slightest gaps. Its generous texture strengthens the hair fiber and coats it without greasing it. Hair is strengthened and shines with health. Instructions for use: Leave the mask on for at least 15 minutes under a heating cap or cellophane to create a “steam” effect and reinforce the effectiveness of the treatment. While the mask is in place, gently massage your scalp to stimulate blood circulation and remove any impurities. Rinse the mask with a stream of cold water to tighten the hair cuticles and strengthen the scalp.