1.Foods with omega-3 fatty acids. This includes salmon, flax seeds, and walnuts. Foods with omega-3 fatty acids have been known to give skin an almost instant glow. These foods can also help reduce inflammation, so any blemishes you do have won’t be quite so red. I love making grilled salmon for dinner. Adding flaxseed to a fresh fruit smoothie is another simple way to boost your omega-3s.