Summer is a wonderful time for swims in the ocean, dips in the pool and playing in the sun. Unfortunately chlorinated water, salt water and too much sun can wreak havoc on your hair, causing split ends, dullness and dryness. The beauty industry, aware of summer’s disastrous effects on hair, has created lots of products to protect, repair and enhance. Celebrities like Katie Holmes, according to InStyle Magazine, use Kerastase Soleil products to fix their damaged dos. Kerastase has a three-step system. Start by massaging their Crème UV Defense Active (a protective sunscreen and moisturizer) into your hair before you leave for the beach or pool ($34 from Kerastase USA.) This cream has two layers of UV protection, and works for color-treated hair. Next, after coming in for the day, shower with Bain Apres Soleil ($32). Last, spray in a couple of pumps of Serum Apres Soleil ($34) to make your hair shiny and well-conditioned. Kerastase is not your only choice, of course. Marie Claire magazine recommends the Davines SU Suncare system, available online from Blush Beauty Store. The Davines Suncare system offers two choices of protective product before you head out for the sun and water.  The Davines Su Cream, $19.40, is made with Absynnian crambe oil, extracted from a Mediterranean fruit. This cream can be rubbed into your tresses. The Davines Sun Oil, $19.59, can be sprayed into your hair. Either one will reduce the sun’s damaging and drying effects. Afterward, wash your hair with Davines SU Wash, $15, a moisturizing shampoo shower gel made with apricot oil and rice protein. A simpler approach is to use Paul Mitchell products. Paul Mitchell’s Shampoo Three, $11.40 from Goddess Within, removes chlorine and minerals using wheat protein and amino acids. Follow it up with Paul Mitchell The Conditioner, $19.32, which will remove any remaining dryness.