Post Chemistry Waterproof Reconstructive Vinegar Bath Mask 300g - Magic ColorThe Waterproof Reconstructive Mask Step 2 of the Hair Vinegar Bath line acts with intensity from the inside out, reconstructing the threads that have suffered with the chemical and mechanical processes and damage to the hair fiber. Glutamic Acid and Apple Extract reinforce the fiber, protecting the hydro lipidic film, preventing external aggressions and loss of moisture, waterproofing with a protective film all the treatment carried out on the thread.