Vichy Dercos densi solutions shampoo full of hair Vichy Dercos densi solutions shampoo full of hair Densi-Solutions - Shampoo for fuller hair, specifically formulated for fine and weakened hair. It removes impurities from the scalp and revitalizes hair from the roots. It strengthens the hair fiber for thicker, healthier-looking hair. For women with thinning hair, reduced hair density and reduced hair mass who want stronger, fuller hair.