SELF magazine and Neutrogena are teaming up to spread the word about summer skin care. Choose from four e-card designs and send messages about sun safety to your friends and family. They're keeping a state-by-state tally of how many e-cards were sent -- more cards equals more donated money for skin cancer charities.

Stay in the shade when possible, but even when the day seems overcast, don't forget your sunscreen. Remember to wear sunglasses that block UV-A and UV-B rays as well. Wide-brimmed hats and clothing that protects your skin are also good options. Check out the gallery for more summer sun safety tips.