Red light therapy has been well studied for its benefits on sleep, particularly in individuals who struggle with sleep disorders or who experience poor sleep quality.

A 2012 study published found that red light exposure at night improved sleep quality and duration in healthy adults. Participants who were exposed to red light before bedtime reported significantly better sleep quality and increased sleep duration.

Another study published in the Journal of Clinical Sleep Medicine looked at the effects of red light exposure on individuals with chronic insomnia. Participants received 30 minutes of red light therapy each day for two weeks and reported significant improvements in their sleep quality and insomnia symptoms compared to a control group.

Joint pain can be caused by a variety of conditions, including osteoarthritis and rheumatoid arthritis. Red light therapy has been shown to help reduce inflammation in the joints, which can help to relieve pain and improve mobility.

A 2014 study found that red light therapy was effective in reducing pain and stiffness associated with osteoarthritis. Participants received red light therapy twice a week for four weeks and reported significant improvements in pain and mobility.

Red light therapy has been found to be effective in treating a variety of skin conditions, including acne, eczema, psoriasis, and rosacea. Red light therapy helps to reduce inflammation, promote collagen production, and improve circulation, all of which can help to improve skin health.

In a 2022 study, participants with mild to moderate acne were treated with red light therapy for 12 weeks. The study found that red light therapy significantly reduced acne lesions and improved overall skin health.

Red light therapy helps to reduce inflammation and improve circulation, which can help to speed up the healing process.

In a 2013 study, participants who received red light therapy after exercise reported less muscle fatigue and soreness compared to participants who did not receive the therapy.

Red light therapy helps to stimulate hair follicles and promote circulation, which can help to improve hair growth.

In a 2014 study, males with androgenetic alopecia were treated with red light therapy for 24 weeks. The study found that red light therapy significantly improved hair density and overall hair growth. This study was also repeated with females, leading to the same positive results.