Red light therapy, also known as photobiomodulation or low-level laser therapy (LLLT), is a therapeutic technique that uses low energy red or near-infrared light for skin treatment and other therapeutic benefits. It's non-invasive and painless, often used in professional settings like dermatology clinics and wellness centers, but also in home-use devices. The therapy works on the principle that human cells have light-sensitive receptors that absorb light in the red and near-infrared wavelength range. When the light penetrates the skin and is absorbed by these receptors, it stimulates energy production and various healing processes within the cells. As of my knowledge cutoff in September 2021, here are some reported benefits of red light therapy: Skin Health and Anti-Aging: Red light therapy can stimulate collagen production, which reduces wrinkles and improves the overall appearance of skin. It may also help to reduce the appearance of scars and improve the health of the skin in general. Wound Healing: It's thought to promote the healing process, aiding in faster recovery of skin injuries. Pain Relief and Inflammation: Red light therapy may provide relief for chronic and acute pain conditions. Some studies have shown it can reduce inflammation, making it a potential treatment option for conditions like arthritis. Muscle Recovery and Physical Performance: It may help with muscle recovery after exercise or injury by reducing inflammation and promoting mitochondrial function. Hair Growth: Some studies suggest it can stimulate hair follicles, promoting hair growth in people with androgenetic alopecia (a common type of hair loss). Mental Acuity: Although more research is needed, some studies suggest it may improve cognitive function and mood by increasing blood flow to the brain and potentially stimulating mitochondrial function in brain cells. Sleep Quality: By helping to regulate the circadian rhythm, red light therapy may also improve sleep quality.