Vichy Dercos Densi-Solutions Hair Mass Recreating Concentrate 100ml is a concentrated scalp care that acts intensely at the root for visibly stronger and denser looking hair with each application. This concentrate is formulated with Resveratrol, a powerful polyphenol derived from a plant of Japanese origin. Known as longevity molecule, it is also used as an antioxidant solution for the skin care. It contains also Stemoxydine, a patented molecule with efficacy clinically proved to redensify the hair.