Vichy Dercos shampoo targets hair loss 200 Ml, brand new . Its effectiveness has been tested against placebo, Aminexil fights the stiffening of the collagen sheath and to facilitate a better fixation of the hair to the scalp. Advice for use: Apply to damp hair, keep the shampoo in your hair for about 1 - 2 minutes, rinse with plenty of water. All our products are brand new, never opened and sealed in its original package