Pyrithione Zinc. Purifies & fortifies. 2 in 1. Natural extracts & B-vitamins. Invigorates hair & scalp. Guaranteed results. Purifies scalp & fortifies hair. Introducing our next generation of dual-action formulas with natural extracts and B-vitamins. 1. Removes and helps prevent flakes. Purifies the scalp. 2. Relieves scalp itch and strengthens hair.