Hold onto your hair with the masque reconstituant hair mask from kérastase, part of the genesis range. The collection takes on the advice of three experts, creating the optimum anti fall formula with the help of a leading dermatologist, nutritionist and hairdresser. The unique formula targets the two key causes of hair fall stress on the fibres and breakage. This mask delivers intense hydration and nourishment, using three key ingredients edelweiss native cells, ginger root and aminexil. This powerful blend smooths hair fibres, reducing tangling and strengthening the strand. The antioxidant formula helps to protect your locks against environmental aggressors, such as pollution or heat, which can damage and weaken hair. Newly nourished and conditioned, your hair will emerge from the mask feeling softer and looking healthier. Reinforcing hair from root to tip, the mask reduces breakage and reveals a stronger surface.