b1 blue weakness hair shampoo copy1000 ML An energizing, fortifying and invigorating shampoo for stressed and weakened hair. It acts directly on the hair fiber to strengthen its structure. Composed of a set of alpha hydroxy acids (AHA) from fruits, an essential element for obtaining healthier and stronger hair. Its frequent use restores vitality and strength to stressed hair. HOW TO USE: brush hair well to detangle and prevent tangles. Wet hair thoroughly and apply a generous amount