Tailor-made for damaged or even very damaged hair. The Resistance - Thermal Extensionist range is intended for damaged hair. All of the treatments offered provide a convincing solution for weakened hair and lack of hydration. The particularity of these treatments lies in their mode of action. Indeed, this hair care penetrates more deeply, so as to restore the base of the hair which is then nourished and cared for from the inside. The hair is then more resistant and stronger, but also softer, more flexible and less brittle. At the level of assets, we find creatine R and maleic acid.