Umberto Giannini Charcoal Detox Shampoo 200ml. A deep-cleansing shampoo powered by activated charcoal to remove impurities, buildup, and excess oil. Perfect for oily scalps or after styling product use. Size: 200ml. How to use – massage into wet scalp and hair, lather, then rinse well. Use 1–2 times weekly for a detox refresh.