Chemically lightened hair is most likely to experience damage due to chlorine in pools. This is a good idea for the skin as well, and is the very reason why you should take a good shower to wet your hair and skin before your swim lessons. Pin by Hair by Cara Lashay on Hair by Cara Faded hair Combining chlorine and hair color can be a catastrophe. Chlorine damaged blonde hair . It is important to remember that if your hair is already thinning, especially fine, or overly dry, chlorine in a swimming pool will exacerbate this. Wet hair tends to be less absorbent than dry hair, so wetting your hair before you step into the pool reduces the chances of your hair absorbing the water molecules from the pool. I rarely swim in chlorinated pools, but the water in my house has high amounts of chlorine (confirmed with a water testing kit — but i can also see the cloudiness and smell it!). September 27, 2016 at 12:52 pm. Rinsing with club soda after swimming is said to help stop the chlo...