IGK hair detox charcoal Dry Shampoo Msrp $32 6.2 oz possibly used once, appears new IGK First Class Charcoal Detox Dry Shampoo is a deeply cleansing dry shampoo that absorbs oil + eliminates odors. With Charcoal Powder + 7% Active Cleansing Powders. You have: Oily hair + scalp. You want: Clean/refreshed/volumized hair.