Vichy Dercos Nutrients Detox Purifying Shampoo delivers a detoxifying action on the scalp as a remedy for hair exposed to pollution. This multifunctional shampoo eliminates oil from the scalp, increases volume by 36%, and protects hair fibers from environmental toxins. Because of its antioxidant qualities, spirulina guards against free radical damage, while activated charcoal absorbs and cleanses, removing impurities from hair.