If you’ve been exploring red light therapy for anti-aging or acne repair, you might wonder what to put on your skin before starting. The right serum can amplify your results, allowing the light to work deeper while protecting your skin barrier. Ingredients like green tea, hyaluronic acid, and aloe vera support cell renewal and prevent dryness during treatment. Let’s break down which serums work best, how to apply them, and what kind of before-and-after transformations you can expect.