The main way to prevent freckles and brown spots is to avoid the sun, or to be protected from the sun’s rays at all times (even when indoors, and on cloudy days). Recommended ways to protect yourself from UV rays include: Never go tanning or use tanning beds. Applying a high-grade, broad-spectrum sunscreen every day. Then, reapply sunscreen every 2 hours. If you wear makeup, try the Colorescience brush-on sunscreen for reapplication throughout the day. Avoid being in the sun between 10 a.m. and 4 p.m. Wear wide brimmed hats and sun-protective clothing when you go outdoors. Also: don’t be ‘rogue’ with sun exposure! The sun’s UV rays can bounce off of sand, snow and cement. So even when you walk from your car to your house, you do get accumulated sun exposure, which can have adverse effects on your skin, over time. People who are prone to freckling are also generally more at risk for developing skin cancers and should, all the more, practice these prevention methods. Please see more on our website.