Briogeo Scalp Revival Mega Strength+ dandruff relief shampoo charcoal + AHA/BHA with salicylic acid 3%. Anti dandruff, psoriasis, seborrheic dermatitis shampoo. No harsh sulfates, no silicones, no parabens Four Pack- 4-8.4 fl. oz./248 ml bottles-has seal intact If you feel like you’re alone in struggling with a dry, flaky scalp, think again: Over 50% of the world struggles with dandruff—a scalp condition and type of seborrheic dermatitis—that’s instantly recognizable by: Large, white or yellow, oily flakes on your scalp Inflammation and redness Painful irritation Frustrating itchiness