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" More than 650 readers shared their hot-weather beauty woes with us. Here, our expert dermatologist, Lucille White, M.D., of Houston, shares her smartest skin solutions. 1. How do I prevent dryness in summer months? \u2014Judy M., Coatesville, PA The causes may surprise you: Chlorine strips away more of your skin&amp;#039;s oils than sea or ocean water. And good sunscreen often requires some scrubbing to get off, removing additional moisture. So right after a pool or beach day, shower and then moisturize immediately afterwards. A daily lotion (instead of a heavier cream) may be enough during the summer months. 2. As someone who had many blistering sunburns as a child, what do I need to watch for? \u2014JoAnn H., Mount Laurel, NJ &amp;quot;Watch for&amp;quot; is key: You can&amp;#039;t reverse the cellular damage that could lead to skin cancer. Get an annual skin check with a dermatologist, and be vigilant about examining your moles yourself for any ABCDEs: Asymmetries, Border irregularities, Color aberrations, Diameters that are sizeable (larger than 1/4 inch), or Evolving changes. (For more specifics, visit skincancer.org.) Additionally, if you have any bumpy, pink spots that don&amp;#039;t go away after a month, or pink, flat, unexplainable scars (in other words, in a spot where you didn&amp;#039;t have a wound), see a physician. 3. Does sunscreen go on before or after moisturizer? \u2014Anonymous Before. All sunscreens work optimally when applied directly to skin. Although mineral-based ones, namely zinc oxide and titanium dioxide, work well when applied on top of other skin care (see question 4), save yourself the guesswork and start with sunscreen. Better yet, simplify: Use a daytime moisturizer with SPF 30 daily. 4. I know I should reapply sunscreen at least every two hours, but what if I&amp;#039;m already wearing makeup? \u2014Denise L., Buffalo Look for exclusively physical (a.k.a. mineral) sunscreens listed on the ingredient label (see question 3). Like little white T-shirts for the skin, they can be worn over makeup, but they also tend to be pasty. Fortunately, certain brands have made them with a tint to mask any whiteness and help them blend into skin (or makeup). Try La Roche-Posay Anthelios 50 Tinted Mineral Ultra Light Sunscreen Fluid ($33, drugstores) or EltaMD UV Physical Broad-Spectrum SPF 41 ($29, eltamd.com/buy). 5. I have oily skin. Do I need to moisturize? \u2014Marcia I., Honolulu Nope\u2014especially if you&amp;#039;re very young. If you&amp;#039;re over 30 and you&amp;#039;d like to moisturize, use a retinol cream at night. It&amp;#039;ll control your oil production without being greasy, plus you&amp;#039;ll get an anti-aging kick: Retinol, a vitamin A derivative, helps skin churn out new collagen to smooth lines, and it&amp;#039;s better tolerated by oily skin. Since it increases skin&amp;#039;s sun sensitivity, don&amp;#039;t forget daily sunscreen. 6. How do I keep my brown spots from becoming more prominent? \u2014Sara A., Springfield, OH Apply two layers of protection; spots are exquisitely sun-sensitive. Put on a chemical sunscreen, then a mineral one. Also, wear a hat with a four-inch-wide brim as well as UV-blocking sunglasses. Try Neutrogena Ultra Sheer Dry-Touch Sunscreen SPF 30 ($11, drugstores) first, then layer on EltaMD. "^^<http://www.w3.org/2001/XMLSchema#string>
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