If you're looking to improve your skin's appearance, you've probably heard about the anti-aging benefits of LED face masks, also called red light therapy masks. These devices may boost collagen for improved skin elasticity, reduce inflammation and -- if they offer blue light -- target acne. However, they typically come at a high price. To help you decide on the best LED face mask for the price and your specific needs, we tested popular models from brands including Shark, CurrentBody, Omnilux and iRestore. Why we like it: The Shark CryoGlow LED Face Mask stands out by combining LED red light therapy with cryotherapy for a refreshing, spa-like experience at home. It uses red and blue LED lights to target collagen production and acne while delivering a cooling effect on your under eyes. Why we like it: While this mask is deemed the best affordable LED mask, nothing about it feels cheap. The mask is made from soft medical-grade silicone that molds seamlessly onto your face.…