Deeply cleansing shampoo effectively removes styling product residue and other impurities from hair. A good choice for an oily scalp and also for using before conditioning treatments, as the active ingredients are able to absorb into hair better. Not recommended for vibrantly colored hair for daily use. Clean hair, a new beginning! Four Reasons Professional Deep Cleansing Shampoo is a professional-quality product created from the best ingredients. It has a vegan formula and recyclable packaging.