is a nonnegotiable when it comes to protecting your skin against the sun’s harmful UV rays, but it’s not the only skin care product to have on hand this summer. In addition to your , dermatologists recommend the best after-sun lotions to help hydrate your skin from sun damage, an overlooked part of sun care.After-sun lotions hydrate and soothe the skin after sun exposure, says , a board-certified cosmetic dermatologist in NYC.