I have used Malibu C Scalp Wellness for over 14 years. It works great for hair exposed to well water, and it makes my scalp have a "calming" affect. I also have psoriatic arthritis and Scalp Wellness Shampoo helps in the areas I break out in on my scalp. If I use other shampoo, I find myself many times up in the middle of the night washing my hair with the Scalp Wellness. Thank you for the great product.