I never had any problems with my hair until I moved to rural Oregon. We are on city water but it's still not great even with a filter. My scalp was oily and flaky and I tried almost every line of shampoo out there but none had the results that your Scalp Wellness line has. I love the shampoo and I can't live without the treatment packs. In fact, my hair stylist has said my hair has never looked so good. Thank you!