It is rare to find a product so good that I actually feel compelled to write a review (I used to be an active MUA reviewer, but it's been quite some time since I've been back - hello ladies!). This product was so astonishing to me that I felt like I had to share, so that others might be helped. I switched shampoos recently to L'Oreal's Nutri-Gloss shampoo in the bright pink bottle and something in that really irritated my scalp - it became flaky and greasy at the same time. This has happened to me once before a long time ago, and not knowing how to handle it at the time, I was using zinc pyrithione shampoos like Head & Shoulders before I found that all it does is glue the flakes to your scalp so that when you stop using it, you experience an avalanche of dandruff. Thus began a year long struggle with scalp issues. Fast forward to now, and my scalp hasn't a problem for years until I used that cheap L'Oreal shampoo (which will go straight in the trash). I'm smarter and now know that the way to take care of a flaky scalp is to exfoliate then treat - and stay away from zinc pyrithione at all costs. It took me about a week to realize that flakes are now a problem again and I ran to Target last night to find a product that fit the bill. Neutrogena's T/Sal Shampoo (Scalp Build-up Control) is perfect, with exfoliating salicylic acid to get rid of the flakes. I knew the reviews were good as far as people being able to get rid of their sebhorritic dermatitis, dandruff, scalp acne etc etc. And they are all true. Shampoo (really massage it into your scalp), leave in for 5 mins, then wash out - in one wash all flakes were gone for me. What the other reviews don't tell you is that you'll have the most beautiful hair of your life afterwards. My hair is bouncy, so shiny, and softer than it's been in years. It's a clarifying shampoo, so the bottle doesn't recommend using it more than a couple times a week, but this wasn't drying at all for me. It's a little pricey at $7 for a 4.5oz bottle at Target compared to typical DS shampoo, but if your scalp problems have driven you to desperation, it's worth it to get the one thing that works. I think regardless of dandruff I'll probably keeping buying this forever if it continues working like this and use it to clarify my hair once a week for general hair/scalp health. I think others have commented on the smell - in a world where everything in the hair care aisle is heavily fragranced and smells like coconuts and rainbows, I think we've gotten used to everything smelling like that and it surprises people when this does not. But it doesn't smell bad, just neutral. It doesn't make your hair smell like anything after. I use a normal conditioner with this (which does smell good), and my hair just smells like the conditioner I use. Would highly recommend this product. If this is your first time dealing with a problematic scalp, don't waste your time and emotions going through every other product out there - skip straight to this and be done with it.