Protect

Lips are susceptible to sunburn since they lack melanin, the pigment that helps shield skin from the sun. Apply a layer of a sun protective product daily like Neutrogena Lip Moisturizer SPF 15 ($3; at drugstores) or look for a lipstick with SPF like Est?e Lauder Futurist SPF 15 ($17.50 steelauder.com), which comes in 22 shades.