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In this study, more than 25% of children experienced axial length shortening greater than 0.05 mm/year following repeated low-level red-light therapy.

This study found that low-level light therapy significantly increased hair density and diameter in androgenetic alopecia patients compared to a sham device, suggesting it could be an effective treatment option.

In this randomized, double-blind trial, researchers observed that low-level laser therapy led to significantly greater hair regrowth on treated areas compared to a sham treatment in patients with androgenetic alopecia over 24 weeks, suggesting it as a potentially effective and safe option.

In this review, the researchers highlight LED therapy as an emerging and safe treatment for skin inflammatory conditions, aging, and hair growth disorders, noting its integration into dermatological practice but emphasizing the need for more controlled studies to confirm its efficacy.

In this study, red-light irradiation significantly increased hair follicle numbers and ATP levels in a mouse model, highlighting low-level laser therapy's potential to enhance hair regeneration and alter the skin metabolic microenvironment.

This review suggested that low-level light therapy using red/near-infrared light could be a safe and effective treatment for various skin and hair conditions, though more robust trials are needed to solidify its clinical utility.

This study found that low level laser therapy at 655 nm significantly increased hair counts in males with androgenetic alopecia.

In this study, the use of wellness apparel emitting red and NIR light was associated with improved disease severity in patients with mild elbow psoriasis, PMLE, and limited AA, though the small sample size and continued use of other treatments were noted as limitations.

This study found that blue light at a wavelength of 453 nm promoted hair growth ex vivo, potentially through interacting with OPN3 receptors in human hair follicles.

This review discusses the applications and advantages of LED-based photobiomodulation therapy for dermatological and cosmetic purposes but highlights existing challenges and health concerns while exploring future perspectives.

This review discusses the applications of low level laser therapy (LLLT) in wound healing, pain reduction, and treating various conditions, but reports no new clinical results; the authors highlight the need for randomized controlled trials for serious diseases.

This study found that 650-nm red light treatment promoted hair follicle proliferation and delayed the transition from anagen to catagen in ex vivo hair follicles from androgenetic alopecia patients, with RNA-seq analysis suggesting involvement of biological processes like metabolism and leukocyte migration.

This study found that red LED photobiomodulation significantly enhanced both the metabolic activity and proliferation of human placenta-derived pericytes, alongside increased expression of angiogenic markers, suggesting a potential non-invasive approach to aid tissue repair and vascular regeneration.

This study found that FDA-approved low-level light/laser therapy devices significantly increased hair density in individuals with pattern hair loss compared to sham devices.

In this review, the authors discussed how men seek cosmetic procedures for distinct reasons compared to women, emphasizing the need for dermatologists to consider male-specific desires for discrete treatments with minimal downtime and differences in psychological motivations.

This study concluded that while home-based intense pulsed light, laser diodes, radiofrequency, and light-emitting diode devices are recommended for certain skin conditions, ultraviolet B phototherapy for psoriasis showed mixed evidence compared to clinic treatments.

This article reviews home-use laser and intense pulsed light systems for hair removal and growth, noting limited efficacy and safety data and emphasizing the need for long-term studies.

This study found that long-term use of a home-use LED device for neck skin rejuvenation significantly improved wrinkle appearance and skin biophysical parameters without affecting thyroid function or morphology after 16 weeks of daily use.

This study observed that LED therapy improved hair regrowth and reduced hair loss in patients with post-COVID telogen effluvium, with or without androgenetic alopecia, compared to those who did not receive LED treatment.

This review discusses the challenges in selecting optical parameters for photobiomodulation studies on hair regrowth and wound healing, reporting no new clinical results and recommending more rigorous, standardized research approaches.

In this study, a new IPL device effectively reduced hair regrowth with high patient satisfaction, particularly in individuals with coarse dark hair and darker skin, despite repeated sessions needed for lighter hair and skin.

The laser therapy device effectively increased hair growth in people with androgenetic alopecia.

In this randomized controlled trial involving breast cancer patients undergoing chemotherapy, this study investigated the efficacy of low-level light therapy for preventing hair loss, measuring outcomes like hair count and patient quality of life, but the abstract does not report specific results.

In this study, 650 nm low-level red light therapy may cause a short-term transient increase in retinal fovea perfusion density in children, with no lasting effects observed at 1 hour post-treatment.

This review discusses the effects of photobiomodulation, particularly its potential to reduce inflammation in various conditions, but it does not report new clinical findings.

This review found that LED therapy, using light in specific wavelengths, may offer effective, non-invasive treatment options for various skin conditions, including acne, melasma, photoaging, and wound healing.

This article reviews low-level light therapy for various types of hair loss and reports no new clinical results; the authors note its safety and advantages but lack data on individual treatment response.

This review of existing literature reports that photobiomodulation shows high effectiveness and safety in treating dermatological conditions like acne, psoriasis, and alopecia, though standardized clinical trials are needed to further validate its therapeutic benefits.

This review concludes that current clinical and preclinical evidence does not indicate oncologic safety concerns linked to photobiomodulation therapy for skin rejuvenation, including no clear evidence of increased cancer risk.

In this study, periodic exposure to red light in aged mice led to increased histone acetylation and activated mitochondrial fatty acid oxidation, which collectively mitigated cellular aging by modulating metabolism, inflammation, and gene expression.