UNBELIEVABLE!!!! The Hard Water Wellness Treatment along with the Hard Water Wellness Shampoo and Conditioner are incredible. My hair is highlighted every six weeks and when In the salon it is a bright, brilliant, pale blonde. After a few weeks it turns a dingy, orange rust color due to our well water. After using the Hard Water Wellness Treatment, it is back to the blonde I love. I will never go without this product again. Love it!