I used this product once after swimming and my somewhat curly partially grey hair and non chemically treated hair was a dry lifeless mess afterwards even after using a good moisture treatment. I am certain that this shampoo is effective at dealing with chlorine and other mineral deposits on the hair but while my chlorinated pool has a pH of level of 7.4, just slightly above Toronto tap water, Paul Mitchell Shampoo 3 contains a pH level of 9, which is sufficiently alkaline to disturb the cuticle and to cause damage to the hair shaft. No shampoo, even one for swimming, should be above a 7, which is neutral, and for optimal hair and scalp health a shampoo that is used on a regular basis, should be a 4.5 to 5.5 pH. pH information should be listed on every bottle of shampoo and unfortunately isn't. I was unable to return this product to the salon or to the distributor for a credit and the JPM telephone contact has been unresponsive today. Disappointed with customer care.