Red light therapy was once associated primarily with sports recovery clinics, however, it is increasingly being adopted by women seeking noninvasive options for skin care, hair support and pain management.
Also known as photobiomodulation, the treatment uses specific wavelengths of red and near-infrared light directed at the skin. Dr. Dominic King, medical director at the Cleveland Clinic, explained the biological process in clinical terms.
“Red light therapy applies specific wavelengths of light that can penetrate below the skin and interact with tissue at a cellular level,” King said. “The light is absorbed by mitochondria, which are needed for metabolism. When stimulated, they produce more energy at the cellular level.”
That increase in cellular energy may, in turn, improve circulation and reduce inflammation. King added that while the therapy can be useful, it should not replace foundational health practices. “It should not be viewed as a shortcut that replaces proper training progression, rest and recovery,” he said.
In dermatology, red light therapy is often discussed in relation to collagen production. Dr. Blair Murphy-Rose, a board-certified cosmetic dermatologist, has previously described its cosmetic relevance in straightforward terms. “Red light has been shown to reduce inflammation in the skin and to stimulate fibroblasts to produce collagen,” she said. “That can reduce and prevent wrinkles and can improve skin texture.”
Collagen is the structural protein that gives skin firmness. As production slows with age, skin can appear thinner and less elastic. Dermatologists say red light therapy may help support collagen levels gradually with consistent use.
For women concerned about thinning hair, scalp-targeted red light devices are also entering the market. By increasing blood flow to hair follicles, the therapy may help prolong the growth phase of hair. Experts caution, however, that sudden or severe hair loss requires medical evaluation.
Physical therapy providers have also incorporated red light therapy into recovery programs. John Gallucci Jr., chief executive of JAG Physical Therapy, said athletes are drawn to the approach because it is low risk and easy to combine with other methods. “Athletes are drawn to red light therapy because it’s non-invasive, relatively low risk when used appropriately, and easy to layer on top of traditional recovery strategies like sleep, nutrition, hydration and active recovery,” Gallucci said.
He said that it works best as a complement rather than a replacement for established treatment plans.
Consumer devices generally fall into two categories: masks and panels. Dr. Marnie Nussbaum, a board-certified dermatologist, outlined the structural difference. “A red light panel is a larger, stationary device that delivers red light wavelengths to a broad surface area — think full face, body or scalp treatments,” she said.
Masks, by contrast, rest directly on the face and may reduce light dispersion. Dr. Michelle Henry, a board-certified dermatologist, noted that proximity affects energy delivery. “You are closer to a mask, so more energy is emitted to the treated area,” Henry said. She added that masks typically offer better eye protection and targeted coverage for facial concerns.
Despite growing popularity, medical professionals note that research remains limited. Dr. Apple Bodemer, a board-certified dermatologist and professor at the University of Wisconsin, has advised consumers to examine study quality carefully. Some trials involve small participant groups, and others rely on higher-powered clinical equipment rather than at-home devices.
Most experts agree that red light therapy may improve blood flow, reduce inflammation and assist in healing through vasodilation, the widening of blood vessels. However, visible cosmetic changes generally require regular use over weeks or months.
Dermatologists advise consumers to consult a healthcare provider before regular use, particularly if they are pregnant, taking photosensitizing medications or managing chronic conditions.
