Recently I discovered a shampoo and conditioner named Wild Indigo, made by Pure Life Soap Co., that work very well for me. I had suffered from flaking, scaling of the scalp and intense itching since high school, more than 30 years. After giving up zinc dandruff shampoos, I've used various organic products for the last eight years with only partial relief. The Pure Life products give me complete relief from the scaling and flaking, and itching is greatly reduced to a tolerable level and is less frequent. Good product, definitely worth a try.