Urban Alchemy Opus Magnum Salt Scrub Cleanse Shampoo provides a natural, salt-based exfoliation to free the scalp from dead skin cells and excess sebum, stimulating blood circulation and promoting healthy hair growth. Though gentle, this exfoliating, cleansing and hydrating shampoo scrub effectively removes silicone, mineral and product-build up, while relieving post-colour scalp irritation and chemical residue.