[OILINESS & CLOGGING]: Sebum oxidation and micro cracks on the scalp surface can create all these issues. [INSTANT SCALP RELIEF]: Purifies the scalp and the fiber from residue, sweat and oil for a fresher and cleaner feel. [ULTRA-POTENT ACTIVES]: Concentrated with 3% AHA, water-soluble acid. It helps to purify the surface of the scalp so that new cells can generate. [DERMATOLOGICALLY-APPROVED]: Made with hair pros, approved by dermatologists. [SCIENTIFICALLY PROVEN EFFICACY]: After only 1 use, -78% scalp sebum*. *instrumental test, shampoo + clay." Read less