Charcoal may help cleanse these impurities, draws our sebum, and clarify oil. This leaves the skin on the scalp free and lets your hair breathe at the root, thus hair growth. Dandruff, redness, oily and itchy scalps may be relieved with activated charcoal. Gets rid of dandruff and itchiness-Dandruff, redness, oily and itchy scalps may be relieved with activated charcoal. You can use it as a scalp before you shampoo or can be mixed in with your shampoo. Direction For Use: Part your hair two halves. Take a palm-full of hair mask and apply evenly from root to tip. Use a wide-toothed comb to evenly spread the mask all over your hair. Cover your hair with a warm towel to help the nutrients of the hair mask get absorbed into the hair. The mask becomes more effective this way. Leave the mask for 15 - 25 minutes before washing if off with a shampoo.