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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 830 nm LED light effectively treated post-inflammatory erythema and hyperpigmentation, while both 830 nm and 590 nm LEDs prevented post-inflammatory erythema.

In this case study, researchers documented a Chinese boy with hair color changing to red and identified MC1R genetic mutations as the cause, rather than zinc deficiency, enhancing our understanding of hair heterochromia due to genetic factors.

This study investigated the effects of 10600nm CO2 dot laser and Nd: YAG laser on Wistar rats' skin, finding that CO2 laser treatment resulted in higher positive expression of MMP-1 and TIMP-1 compared to Nd: YAG laser, with statistically significant differences noted.

This article reviews light-based hair removal devices for home use, highlighting safety issues and the need for consistent international regulations and guidelines for their manufacture and marketing.

This study found that monochromatic excimer light achieved complete remission in over 50% of plaque psoriasis cases and various levels of improvement in other skin conditions, including vitiligo and mycosis fungoides.

The authors concluded that low energy laser therapy may serve as a useful complementary treatment for skin diseases such as lichen planus, infectious finger pulpits, scalp alopecia, and crural ulcers.

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.

The editorial introduces studies on various cosmetic and laser treatments, their effectiveness, and posttreatment care.

This study explored the effects of a new narrow-band red LED light on hair growth in mice, showing potential benefits compared to existing laser therapies.

This study observed that in mice, small-scale x-ray irradiation resulted in uniquely rapid healing of hair follicles, differing from the hypertrophic and hyperplastic responses seen in larger irradiated areas.

In this study, researchers observed that red and red-orange LED light therapy stimulates nitric oxide production and decreases dihydrotestosterone synthesis in cell models, suggesting a potential mechanism for using light therapy to treat androgenetic alopecia.

This study introduced laser-assisted exosome delivery and observed early signs of clinical improvement in two patients, though causality cannot be inferred from these preliminary, uncontrolled cases.

This chapter highlights various commercial and open-source light sheet microscopy systems, detailing their rapid evolution and integration of multimodal technologies, with a focus on the ZEISS Lightsheet Z.1 system's advanced design for direct imaging and specialized sample mounting.

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.

Excimer laser therapy can be an alternative for treating superficial morphea when topical steroids don't work.

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 chapter discusses pediatric disorders like alopecia areata and vitiligo, identifying laser and light therapies as treatment options, and highlights that the pulsed dye laser is well tolerated and effective for treating molluscum contagiosum.

Laser hair removal might also work by damaging blood vessels around hair follicles.

This study evaluated the 308-nm excimer laser as an adjuvant treatment for frontal fibrosing alopecia and found it may stabilize hairline recession and improve erythema and perifollicular hyperkeratosis, with transient erythema as the only reported adverse effect.

Using a CO₂ laser for hair transplants improves the surgery and may become important in future hair restoration.

This study found that while 450nm blue light can inhibit collagen and induce oxidative stress in dermal fibroblasts, 850nm near-infrared light may enhance metabolic activity without causing oxidative damage, suggesting potential for tailored light therapies in skin treatments.

In this systematic review, researchers examined various treatments for axillary hyperpigmentation, finding that Q-switched Nd:YAG laser and intense pulsed light showed significant improvement with minimal adverse effects; desonide and Cyperus rotundus oil were also notably effective among topical treatments.

This study observed that multiphoton excitation microscopy revealed changes in vascular structure and hair papillae in mice subcutaneous tissue following cyclophosphamide treatment for chemotherapy-induced alopecia.

In this study, researchers found that specific treatment parameters disrupted follicles and sebaceous glands, damaging the bacteria Cutibacterium acnes and promoting follicular remodeling, which may improve both inflammatory and noninflammatory acne lesions.

This study reported the development of fluorescent markers using wide band gap metal oxides with rare earth ions for early tumor detection and treatment. Testing in animals showed high efficiency and selectivity, with potential applications in contrast-enhanced MRI, targeted drug delivery, and photodynamic cancer therapy.

In this study, a novel portable LED device significantly accelerated wound healing in rats, with faster wound closure, increased collagen deposition, and more microvessels at a higher radiation intensity, suggesting its potential for innovative wound management.

This study found that near-infrared LED therapy enhanced ATP synthesis, reduced reactive oxygen species, and promoted collagen production and hair growth more effectively than white LEDs in human skin cells and a photoaging mouse model.

This study reports that using laser microdissection to isolate telogen hair follicles significantly improves DNA extraction efficiency for STR typing, reducing contamination from keratin.