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This study found that adjusting CO2 laser parameters to 55 W and 0.1–0.15 seconds improved hair graft survival rates to 80-90% in Oriental hair transplant patients.

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.

Minoxidil increases blood flow in balding scalps, possibly reversing hair loss.

In a 24-week randomized trial, this study found that the RAMACAP laser helmet significantly increased hair density and diameter in androgenetic alopecia patients compared to a sham device, although limitations included a small sample size and potential issues with the control used.

This study found that low-level laser therapy may significantly improve androgenic alopecia in both men and women, either alone or alongside treatments like minoxidil and finasteride.

In this clinical study, low-level laser therapy using the HANDI-DOME LASER device increased hair counts by 51% compared to controls, indicating its potential as a safe and effective treatment for androgenetic alopecia in women aged 18 to 60.

This study concluded that ablative fractional lasers may induce hair regrowth in mice by activating the Wnt/β-catenin pathway.

This study found that low-level laser therapy may have promising effects on hair regrowth in dogs with noninflammatory alopecia, with most animals showing improvement after treatment.

This study found that low-level laser therapy increased the expression of proteins in dermal papilla tissues, suggesting it promotes hair growth in male androgenetic alopecia patients.

This study found that combining fractional CO₂ laser with halometasone cream improved chronic eczema more effectively than halometasone alone, with efficacy varying by laser parameters and showing better results at 4 weeks compared to 1 week. Pain was noted with higher energy treatments.

This study found that in a rat model of alopecia, combining low-level laser therapy with Neoptide treatment resulted in better hair regrowth compared to either treatment used alone.

In this study, the researchers found no superiority of combining 308-nm excimer laser with intralesional corticosteroid over corticosteroid alone for treating frontal fibrosing alopecia, and reported side effects such as erythema and postinflammatory hyperpigmentation in both treatment groups.

In this study, both topical clobetasol propionate and fractional Er: YAG laser followed by topical steroids demonstrated significant improvement in patients with alopecia areata, but the combined laser and steroid treatment was found to be more effective and safe.

This study found that the 308-nm Excimer laser was effective and safe for treating patchy alopecia areata in children, with hair regrowth observed in 60% of treated scalp patches.

This review discusses the modest efficacy of home-use laser and light devices for conditions like hair removal and acne, noting limited evidence and a lack of robust trials.

This study found that an 800-nm diode laser was effective for reducing pigmented hair and extending hair plucking intervals, with most patients tolerating the procedure well without anesthetics.

This study found that the long-pulse Nd:YAG laser effectively reduces unwanted facial hair across various skin types, with hair regrowth delayed significantly longer than with self-applied methods.

In this study, 80% of patients expressed satisfaction with diode-laser hair removal, though multiple treatments were needed for optimal results and were a deterrent for some.

This literature review suggests that fractional lasers and microneedling, particularly when used with topical agents, may be effective treatments for alopecia areata; however, the small size and number of studies highlight a need for larger trials to confirm efficacy.

This study found that PRP was effective for treating alopecia areata with similar improvement across groups, while topical delivery via fractional CO2 laser or microneedling reduced injection pain.

This study found that the long-pulsed ruby laser effectively delays hair growth and has the potential for permanent hair removal with minimal pain and side effects, offering an advantage over traditional hair removal methods.

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 multiple treatments combining NIR laser phototherapy with ICG significantly reduced inflammation and improved skin condition in acne without side effects.

In this review, researchers examined the current status and advancements in using long-pulse alexandrite lasers for treating hair removal, vascular lesions, and pigmented lesions, aiming to guide clinical use based on how the laser's 755nm wavelength is absorbed by melanin and hemoglobin.

This article discusses timed exposure settings with ablative lasers for treating benign dermal tumors and highlights their potential to reduce treatment time and scarring risk, but it reports no new clinical results.

This case report describes successful hair regrowth and repigmentation in a patient with scalp-localized alopecia areata following treatment with Sunetics Laser therapy.

This review reports that low-level laser therapy significantly increased hair density in androgenetic alopecia patients compared to a sham treatment, with variations in effectiveness based on treatment intensity and duration.

This study investigated the anti-inflammatory effects of a 940nm diode laser in Wistar rats with carrageenan-induced arthritis and found that a 74J/cm² energy density significantly reduced edema and restored function, whereas 171J/cm² neared thermal exposure limits for the skin.

This study found that trichohyalin, a protein previously thought to be restricted to hair and tongue, is also present in isolated cells within the granular layer and stratum corneum of normal human epidermis.

This study observed that systemic acitretin improved symptoms in 75% of lichen planopilaris patients, despite varied responses and a dominant female prevalence.