Avoid Caffeine and Alcohol
While at the beach or poolside, try not to indulge in that fruity margarita or iced coffee. While they might seem relaxing, caffeine and alcohol both cause dehydration. We think we're introducing cool liquids into our bodies, but these substances are both diuretics, which promote the excretion of water from the body. If you suffer from dry skin, don't aggravate the situation with caffeinated sodas, alcohol or coffee.
Use a Shielding Lotion
A shielding lotion is applied before jumping into the pool or wading into the ocean. These products usually contain a high amount of silicone, which protects the lipid barrier and also delivers moisturizing oils to the skin. They are also hydrophobic and repel water. Try Skin MD Natural Shielding Lotion (http://www.skinmdnatural.com/) or Gloves In A Bottle (http://www.glovesinabottle.com/).
Towel Off Thoroughly and Immediately
After your dip, towel off immediately. Gently pat the towel over your entire body, paying attention to areas that tend to get dry. By absorbing the water before it has a chance to evaporate, you can head off some dryness. You can also try using a super-absorbent microfiber towel from Aquis (http://www.britanne.com/) or Micronet (http://www.leisurepro.com/). These also provide the added benefit of drying faster (no more carrying around wet towels in your tote bags).
Exfoliate, Then Moisturize
Before you moisturize your skin, it's important to remove the dead layer of skin cells. This will allow your skin to absorb the nutrients in the moisturizer more effectively. However, go gentle on the exfoliation. While it's tempting to try and scrub off those flaky patches, this will only make things worse. Dry skin is damaged skin and needs to be treated with care. If you find salt or sugar scrubs too rough, opt for gentler synthetic beads that will exfoliate with less force. A good example is Dermadoctor's KP Duty Body Scrub (http://www.dermadoctor.com/).