A red light therapy mask is a wearable device fitted with LED lights that emit low-level red and near-infrared wavelengths to treat the skin while you wear it hands-free. The light penetrates the skin to stimulate collagen production, improve circulation, and reduce inflammation, which can help with fine lines, acne, and overall skin tone over consistent use. Most masks are made from flexible silicone, run on rechargeable batteries, and have sessions lasting 10-20 minutes. They’re used at home as a non-invasive option for skin rejuvenation without downtime.