I have really bad dandruff, combined with a very oily scalp. Oils and dead skin build up on my scalp super quickly, but I don’t want to wash my hair too often, so this scrub is really awesome to deep-clean my scalp. It’s a combination of chemical and physical exfoliation, which I like. The spout is really precise, so it makes it easy to apply on sectioned hair. I put in on my scalp, massage it in, and then leave it for 10-20 minutes, and then wash it out and follow with shampoo