A red, splotchy chest could be caused by many different things — acne, rosacea, and sunburn are just a few. If your flush can be directly linked to your emotions or alcohol, consider rosacea to be a potential culprit. Flare-ups can be caused by too much sun exposure, certain spicy foods, and even caffeine. The first thing you should do to calm any redness on your chest is look to your clothing. The textures could be irritating the area. Next, check out your beauty regimen. Swap any harsh exfoliants for calming oatmeal-packed moisturizers.