The 4 best red light therapy devices we tried in 2025

For a technology that involves doing absolutely nothing but basking in some light rays, red light therapy (RLT) is wildly effective.Whether you’re treating acne, thickening hair, softening fine lines, speeding muscle recovery, or just looking to biohack your way to a better mood, red light has entered the chat.

Once reserved for dermatologists and expensive med spas, at-home RLT devices now come in all shapes, sizes, and wavelengths.What makes red light therapy so powerful? It works at the cellular level, stimulating mitochondria (the energy powerhouses of your cells) to produce more ATP (adenosine triphosphate), the fuel your body uses to repair itself.That translates to brighter skin, faster muscle recovery, and even improved sleep.

Studies suggest stacking red light therapy with methylene blue — yes, that vivid blue liquid with fans including RFK Jr.going viral for its nootropic benefits — can supercharge results by enhancing mitochondrial function even further.

Think of it as adding rocket fuel to your already glowing engine.So whether you’re a fitness junkie, a skincare maximalist, or just want to look hotter and live longer (don’t we all?), here are the best red light therapy devices worth investing in — plus one that’s small enough to fit in your carry-on but mighty enough to turn your skin into a glazed donut.Red light therapy (RLT), also known as low-level laser therapy (LLLT) or photobiomodulation (PBM), is a non-invasive treatment that utilizes specific wavelengths of red and near-infrared light (typically between 600 and 1000 nanometers) to stimulate cellular activity.This light penetrates the skin and is absorbed by the mitochondria — the energy-producing components of cells — enhancing the production of adenosine triphosphate (ATP). Increased ATP production can improve cellular function, promoting healing and regeneration.

Clinical studies have demonstrated that RLT can aid in skin rejuvenation, reduce inflammation, alleviate pai...