Supergoop! Shine-On Lip Screen SPF 50 - "Did you know that your lips need protection from the sun? I learned the hard way. After four days in the Caribbean sun, my lips got all swollen like balloons due to excessive sun exposure. Next time I am definitely using Supergoop!'s Shine-On Lip Screen SPF 50. It's a bit of a splurge at $20, but it works like a charm."