RESISTANCE EXTENTIONISTE lenght strengthening shampoo 500 ml RESISTANCE EXTENTIONISTE lenght strengthening shampoo 500 ml is a shampoo designed to help strengthen and lengthen hair. It is formulated with ceramides and lipids to help protect hair from breakage and damage. It also helps to detangle and hydrate the hair, leaving it feeling soft and smooth. The shampoo is free from parabens, sulfates, and silicones, making it safe and gentle for everyday use.