LED light therapy is a non-invasive way to zap sun spots and brighten skin tone, Wong says. During a 30-minute session, LED red and near-infrared light pass through and “kick start” cells to rejuvenate skin. Overheating increases melanin activity, so cool down skin as soon as possible after sun exposure and exercise. A cold cloth or ice pack will do the trick, or try freezing toner in ice cube trays (one of last week’s tips for beating the heat).