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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.

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 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.

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.

In this study, LED therapy for eyebrow loss in older females with frontal fibrosing alopecia significantly increased eyebrow hair count after 10 treatments and maintained improvement at 6 months, indicating it could be a promising and well-tolerated treatment option.

This study found that human hair follicles demonstrated a dose-dependent response to light in an ex vivo photoepilation model, which could predict the clinical efficacy and permanency of light-based hair removal devices.

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 reports that LED phototherapy is gaining popularity as a safe and effective non-invasive method for treating various skin conditions, enhancing skin rejuvenation, wound healing, and inflammation modulation, and is increasingly integrated into clinical protocols for conditions like acne vulgaris and signs of aging.

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 study found that both red and green LED therapies combined with a microneedling patch significantly improved hair density and diameter in androgenetic alopecia patients over 24 weeks, with no serious side effects and similar efficacy between the two light wavelengths.

This narrative review discusses the promising role of photobiomodulation in dermatology, emphasizing its non-invasive nature and potential benefits, but acknowledges the need for further research to establish standard protocols.

This study examines the effects of excessive or prolonged exposure to blue light on retinal function and highlights its potential health implications, noting that both photoreceptor and intrinsically photosensitive retinal ganglion cells (ipRGCs) are particularly sensitive to blue wavelengths.

This report suggests a causal connection between hyaluronic acid filler injections and the development of xanthelasma, possibly through an inflammatory reaction that increases vascular permeability and LDL leakage.

Different lab conditions and light treatment methods change how human skin cells respond to light therapy.

This clinical review evaluates current evidence on various adjunctive therapies for androgenetic alopecia, highlighting modest benefits for some interventions but emphasizing significant gaps and the need for rigorous, high-quality research to guide effective management strategies.

This article provides an in-depth exploration of both natural and synthetic treatments for alopecia, examining their mechanisms, benefits, limitations, and current research, while noting that synthetic therapies can have potential adverse effects.

This research concluded that the novel hydrogel PlacMA, derived from human placenta and curable by visible light, shows promise for cell culture and tissue engineering applications due to its tunable properties.

Human hair growth involves active, resting, and intermediate phases, and examining plucked hairs can teach students about hair biology and diseases.

This article discusses the applications and proposed benefits of LED low level light therapy for various conditions like acne, wound healing, and pain relief, but provides no new clinical results.

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 study found that high-speed optical coherence tomography may be a promising non-invasive tool for analyzing human hair conditions.

The study found that exposing Arbas Cashmere goats to a short photoperiod significantly increased cashmere production by extending the anagen phase of hair follicles, with gene expression changes identified as contributing factors.

In this study, using light masks to extend photoperiod was effective for maintaining the summer coat in horses and accelerating shedding in outdoor horses, but timing was crucial for success.

This case report describes a 23-year-old woman who experienced hair breakage along her anterior hairline due to the formation of bubbles in the hair shafts from blow-drying techniques.

In this study, researchers identified key mRNA and microRNA regulatory mechanisms that influence cashmere growth in cashmere goats under different photoperiods, potentially offering new methods to enhance cashmere production.

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 article reviews the hormonal and medication-related factors associated with acne development but does not present new research findings.

This review discusses clinical features, differential diagnosis, and treatments for female pattern hair loss, emphasizing the use of 2% topical Minoxidil and exploring alternative off-label therapies.

This review discusses the current evidence and highlights gaps in research needed for the wider acceptance of low-level laser therapy as a treatment for hair loss; no new clinical results are provided.

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.