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This article describes a non-blinded study investigating low level laser therapy for seven patients but reports no new clinical findings.

This review found promising evidence for the efficacy of certain laser and light-based therapies in treating various forms of alopecia, such as low-level light therapy for androgenetic alopecia and excimer laser for alopecia areata, but emphasized the need for further understanding of these treatments.

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.

In this study, low-level laser therapy showed no statistically significant improvements in hair growth measures, despite some patients experiencing increases in terminal hairs and shaft diameter.

This study found that using a home-use LED mask with specific wavelengths improved signs of skin aging in both ex-vivo and clinical settings.

This study found that 1064 nm QS Nd:YAG laser treatment effectively lightens hair and improves skin appearance in Indian subjects with minimal adverse effects, offering a safer alternative to chemical lightening products.

This study found that tristimulus colorimetry is a sensitive and quantitative method for projecting hair growth rates in depilated mice, and it observed that 890 nm LED irradiation promotes hair regrowth.

This review discusses various methods of light-based hair removal and reports no new clinical results, highlighting advances in laser and intense pulsed light technologies used for targeting hair pigmentation.

This review discusses the potential mechanisms and evidence supporting low-level laser therapy for stimulating hair growth in men and women, while noting its safety and effectiveness but needing further study on specific parameters.

This study found that intense pulsed light treatment achieved a mean of 85% hair reduction in two patients with faun tail, although local anesthesia may be needed due to severe pain associated with neurological abnormalities.

This review discusses the use of electromagnetic radiation, including low-level laser therapy, for hair loss management, but it reports no new clinical results and suggests further research.

This study concluded that the Spa Touch system effectively retards hair regrowth, functioning like a "light razor" for quick and cost-effective epilation.

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 review discusses low level laser therapy for hair loss but reports no new research findings; it serves as an introduction to understanding existing knowledge before upcoming evaluations of recent studies.

This study found that temporary or permanent leukotrichia may occur after intense pulsed light therapy for hair removal, likely due to differing thermal effects on melanocytes and hair follicle cells.

Polarizing light microscopy can easily and reliably diagnose congenital keratinizing disorders like Netherton syndrome.

This study found that LED light irradiation induced proliferation and migration of human outer root sheath cells, potentially through the stimulation of the Wnt/β-catenin and ERK signaling pathways.

This review examines the FDA's 510(k) approval process for low-level laser therapy devices used in treating androgenetic alopecia and reports no new clinical findings.

Low-level laser therapy may increase hair density in pattern hair loss.

Red and infrared light therapy improves hair growth in balding patients.

In this study, low-level laser/LED therapy significantly increased hair density in patients with androgenetic alopecia compared to placebo over 4 to 26 weeks; however, the efficacy for other alopecia types remains unclear, requiring further research.

This study found that combining low-fluence Q-switched Nd: YAG laser and intense pulsed light led to faster and more effective melasma treatment compared to using the laser alone, though recurrence still occurred.

This randomized controlled trial reported that light-emitting diode therapy significantly reduced ecchymosis and edema and accelerated wound healing in patients during the first two weeks following rhinoplasty, without any adverse effects.

This review of low-level laser therapy for patterned hair loss found that red-spectrum light may be effective for hair growth, but larger case-controlled studies are needed to further support this conclusion.

This study found that exposure to red LED light may improve fibre quality and hair follicle development in Angora rabbits, potentially due to increased melatonin secretion.

This study found that low-level laser therapy significantly increased hair counts in women with female pattern hair loss but not in those with telogen effluvium, without serious adverse events.

This study found that diode laser reduced axillary hair more effectively but with greater pain than intense pulsed light, with both methods producing lasting and safe results.

Among participants in a 26-week trial, this study by REVIAN Inc. reported that their REVIAN RED dual wavelength LED light treatment for androgenetic alopecia was both safe and effective at the 16-week mark.

This study found that low-level laser therapy with an 830-nm wavelength most significantly stimulated hair growth in rats, compared to other wavelengths tested.