低能量激光疗法（LLLT）用于雄激素性脱发

基于58项研究（7项荟萃分析、8项RCT），共11,100名参与者。49/58项研究显示积极效果。

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结论

Low-level laser therapy has strong, well-established evidence for supporting hair growth in androgenetic alopecia, backed by multiple meta-analyses and randomized controlled trials.

49 out of 58 studies show positive effects, supported by 7 meta-analyses and 8 RCTs
Stimulates hair follicles through photobiomodulation at specific light wavelengths
Included in clinical guidelines as an evidence-based option for pattern hair loss
Available as at-home devices (caps, combs, helmets) and clinical in-office systems

Key Study Findings

Review

A Canadian Consensus on Androgenetic Alopecia: Approach and Management.

Dose: None vs: Placebo 效果: None None

review

The Use of Light-Based Therapies in the Treatment of Alopecia.

Dose: Low-level light therapy (LLLT) various devices and wavelengths; combined with minoxidil or finasteri vs: Placebo 效果: LLLT improves hair density in AGA; potential to prolong anagen phase in telogen effluvium; may promo None

other n=723

Consensus Recommendations for the Management of Androgenetic Alopecia in Egypt: A Modified Delphi Study.

Dose: None vs: Placebo 效果: 27 consensus statements established across 7 areas: diagnosis, minoxidil, antiandrogens, LLLT, adjuv None

systematic review

Full-Spectrum phototherapy in hair loss management: a systematic review of wavelength-dependent mechanisms, clinical efficacy, and …

Dose: Full-spectrum phototherapy: UVB/UVA, red light, near-infrared (short and long wavelength), mid-infra vs: Placebo 效果: UVB/UVA induces T-cell apoptosis (restoring immune privilege in AA); red light activates mitochondri None

review

The role of microtrauma in hair regrowth and regeneration in non-scarring alopecia.

Dose: Various microtrauma procedures: microneedling, fractional/non-fractional lasers, contact immunothera vs: Placebo 效果: Positive outcomes reported for hair density and thickness with microneedling, lasers, LLLT, and PRP None

randomized controlled trial n=9 12.5 weeks Single-blind

Photobiomodulation therapy and 5% minoxidil in female pattern hair loss: a case series focusing on …

Dose: Photobiomodulation therapy (PBMt; red laser 100mW, 4J/point, 25 sessions, twice weekly) + minoxidil vs: Placebo 效果: Both groups improved QoL and hair density; PBMt + MIN showed significantly greater reduction in telo None

Key Statistics

研究数量

11100

受试者

↑

Positive

等级

Referenced Papers

Characterization and Management of Androgenetic Alopecia in Transgender and Gender-Diverse Individuals: A Narrative Review. Review

Dermatology and therapy 2026

Comparative efficacy of minoxidil alone versus minoxidil combined with low-level laser therapy in the treatment of androgenic alopecia: a systematic … Meta-Analysis

The Journal of … 2025 3 次引用

Comprehensive Review on Hair Loss and Restorative Techniques: Advances in Diagnostic, Artistry, and Surgical Innovation. Review

Cureus 2025 2 次引用

A Canadian Consensus on Androgenetic Alopecia: Approach and Management. Other

Journal of cutaneous … 2025 2 次引用

Lasers for treatment of androgenetic alopecia: an in-depth analysis. Review

Lasers in medical … 2025 1 次引用

Photobiomodulation therapy and 5% minoxidil in female pattern hair loss: a case series focusing on hair growth phases over a … RCT

Lasers in medical … 2025 1 次引用

Comparative efficacy and safety of low-level laser therapy and topical Minoxidil combination vs. topical Minoxidil monotherapy in androgenetic alopecia management: … Meta-Analysis

Lasers in medical … 2025 1 次引用

The Use of Light-Based Therapies in the Treatment of Alopecia. Review

Journal of cosmetic … 2025

Consensus Recommendations for the Management of Androgenetic Alopecia in Egypt: A Modified Delphi Study. Other

Clinical, cosmetic and … 2025

The role of microtrauma in hair regrowth and regeneration in non-scarring alopecia. Review

Italian journal of … 2025

Full-Spectrum phototherapy in hair loss management: a systematic review of wavelength-dependent mechanisms, clinical efficacy, and future directions. Systematic Review

Lasers in medical … 2025

Status of research on the development and regeneration of hair follicles. Review

International journal of … 2024 39 次引用

Hybrid hair follicle stem cell extracellular vesicles co-delivering finasteride and gold nanoparticles for androgenetic alopecia treatment. Other

Journal of controlled … 2024 30 次引用

Efficacy and Safety of Laser Therapy and Phototherapy in Cicatricial and NonCicatricial Alopecia: A Systematic Review Study. Review

Health science reports 2024 14 次引用

Physical Treatments and Therapies for Androgenetic Alopecia. Review

Journal of clinical … 2024 10 次引用

Medical Treatment for Androgenetic Alopecia. Other

Facial plastic surgery … 2024 8 次引用

The impact of monotherapies for male androgenetic alopecia: A network meta-analysis study. Meta-Analysis

Journal of cosmetic … 2024 8 次引用

Comparison between melatonin versus melatonin and photobiomodulation versus photobiomodulation in the treatment of Alopecia X in German Spitz dogs: Clinical, … Other

PloS one 2024 4 次引用

[Androgenetic alopecia: where do we stand in 2024?]. Review

Revue medicale suisse 2024 2 次引用

Treatment of Androgenetic Alopecia: Current Guidance and Unmet Needs. Review

Clinical, cosmetic and … 2023 58 次引用

What's New in Therapy for Male Androgenetic Alopecia? Other

American journal of … 2023 41 次引用

The efficacy and safety of the combination of photobiomodulation therapy and pulsed electromagnetic field therapy on androgenetic alopecia. RCT

Journal of cosmetic … 2023 11 次引用

Efficacy of Low-Level Laser Therapy in Androgenetic Alopecia - A Randomized Controlled Trial. Other

International journal of … 2023 10 次引用

Photobiomodulation and alopecia: a crowdsourced survey study on patient preferences. Other

Journal of cosmetic … 2023 2 次引用

Noninvasive Hair Rejuvenation. Review

Clinics in plastic … 2023 1 次引用

Microneedling and Its Use in Hair Loss Disorders: A Systematic Review. Review

Dermatology and therapy 2022 43 次引用

Efficacy of non-surgical treatments for androgenetic alopecia in men and women: a systematic review with network meta-analyses, and an assessment … Meta-Analysis

The Journal of … 2022 40 次引用

Hair regrowth treatment efficacy and resistance in androgenetic alopecia: A systematic review and continuous Bayesian network meta-analysis. Systematic Review

Frontiers in medicine 2022 14 次引用

Efficacy assessment for low-level laser therapy in the treatment of androgenetic alopecia: a real-world study on 1383 patients. Other

Lasers in medical … 2022 14 次引用

Role of Low-Level Light Therapy (LLLT) in Androgenetic Alopecia. Review

Journal of cutaneous … 2021 44 次引用

A Systematic Review and Meta-analysis of Randomized Controlled Trials of United States Food and Drug Administration-Approved, Home-use, Low-Level Light/Laser Therapy … Other

The Journal of … 2021 31 次引用

Hair Growth Promoting Effects of 650 nm Red Light Stimulation on Human Hair Follicles and Study of Its Mechanisms via … Other

Annals of dermatology 2021 21 次引用

Efficacy of Minoxidil Combined With Photobiomodulation for the Treatment of Male Androgenetic Alopecia. A Double-Blind Half-Head Controlled Trial. RCT

Lasers in surgery … 2021 17 次引用

Results of low-level laser therapy in the treatment of hair growth: An Egyptian experience. Other

Dermatologic therapy 2021 12 次引用

Low-Level Laser Therapy for Androgenetic Alopecia. Other

Actas dermo-sifiliograficas 2021 3 次引用

A review of the treatment of male pattern hair loss. Review

Expert opinion on … 2020 147 次引用

A randomized blinded retrospective study: the combined use of micro-needling technique, low-level laser therapy and autologous non-activated platelet-rich plasma improves … Other

Expert opinion on … 2020 50 次引用

Female pattern hair loss: A comprehensive review. Review

Dermatologic therapy 2020 48 次引用

Examining the Safety and Efficacy of Low-Level Laser Therapy for Male and Female Pattern Hair Loss: A Review of the … Review

Skin appendage disorders 2020 32 次引用

The effectiveness of combination therapies for androgenetic alopecia: A systematic review and meta-analysis. Meta-Analysis

Dermatologic therapy 2020 30 次引用

Low-level laser therapy and narrative review of other treatment modalities in androgenetic alopecia. Review

Lasers in medical … 2020 17 次引用

Factors influencing the effect of photobiomodulation in the treatment of androgenetic alopecia: A systematic review and analyses of summary-level data. Systematic Review

Dermatologic therapy 2020 7 次引用

Physiopathology and current treatments of androgenetic alopecia: Going beyond androgens and anti-androgens. Review

Dermatologic therapy 2019 124 次引用

Low-level laser therapy for the treatment of androgenetic alopecia in Thai men and women: a 24-week, randomized, double-blind, sham device-controlled … RCT

Lasers in medical … 2019 88 次引用

Photobiomodulation for the management of alopecia: mechanisms of action, patient selection and perspectives. Other

Clinical, cosmetic and … 2019 41 次引用

Quantitative proteomic analysis of dermal papilla from male androgenetic alopecia comparing before and after treatment with low-level laser therapy. Other

Lasers in surgery … 2019 21 次引用

Non-ablative radio frequency for the treatment of androgenetic alopecia. Other

Acta dermatovenerologica Alpina, … 2019 7 次引用

Shedding light on the FDA's 510(k) approvals process: low-level laser therapy devices used in the treatment of androgenetic alopecia. Other

The Journal of … 2019 6 次引用

Efficacy of non-surgical treatments for androgenetic alopecia: a systematic review and network meta-analysis. Meta-Analysis

Journal of the … 2018 80 次引用

Low-level laser therapy for the treatment of androgenic alopecia: a review. Meta-Analysis

Lasers in medical … 2018 75 次引用

Guidelines for the diagnosis and treatment of male-pattern and female-pattern hair loss, 2017 version. Other

The Journal of … 2018 69 次引用

Use of low-level laser therapy in treatment of the androgenic alopecia, the first systematic review. Systematic Review

Journal of cosmetic … 2018 13 次引用

Prescribing Habits for Androgenic Alopecia Among Dermatologists in Spain in 2017: A Cross-Sectional Study. Other

Actas dermo-sifiliograficas 2018 9 次引用

The effectiveness of treatments for androgenetic alopecia: A systematic review and meta-analysis. Meta-Analysis

Journal of the … 2017 343 次引用

Low-level laser therapy as a treatment for androgenetic alopecia. Systematic Review

Lasers in surgery … 2017 71 次引用

Novel Approach to Treating Androgenetic Alopecia in Females With Photobiomodulation (Low-Level Laser Therapy). RCT

Dermatologic surgery : … 2017 43 次引用

A Critical Assessment of the Evidence for Low-Level Laser Therapy in the Treatment of Hair Loss. Review

Dermatologic surgery : … 2017 39 次引用

New Treatments for Hair Loss. Review

Actas dermo-sifiliograficas 2017 17 次引用

[What is the value of low-energie lasers in the treatment of androgenetic alopecia ?]. Review

Revue medicale de … 2017

Interventions for female pattern hair loss. Meta-Analysis

The Cochrane database … 2016 18 次引用

Low-level laser (light) therapy (LLLT) for treatment of hair loss. Review

Lasers in surgery … 2014 243 次引用

The growth of human scalp hair in females using visible red light laser and LED sources. RCT

Lasers in surgery … 2014 104 次引用

Use of low-level laser therapy as monotherapy or concomitant therapy for male and female androgenetic alopecia. Other

International journal of … 2014 63 次引用

The growth of human scalp hair mediated by visible red light laser and LED sources in males. RCT

Lasers in surgery … 2013 140 次引用

Nonsurgical therapy for hair loss. Review

Facial plastic surgery … 2013 16 次引用

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

常用剂量

hairloss:: 8-15 minutes, 3x/week

上限： Not applicable

研究中使用的剂量

剂量	持续时间	效果	N
None	--	Positive	--
Low-level light therapy (LLLT) various devices and wavelengths; combined with minoxidil or finasteri	--	Positive	--
None	--	Neutral	723
Full-spectrum phototherapy: UVB/UVA, red light, near-infrared (short and long wavelength), mid-infra	--	Positive	--
Various microtrauma procedures: microneedling, fractional/non-fractional lasers, contact immunothera	--	Positive	--
Photobiomodulation therapy (PBMt; red laser 100mW, 4J/point, 25 sessions, twice weekly) + minoxidil	12.5 weeks	Positive	9
Low-level laser therapy (LLLT) combined with topical minoxidil vs topical minoxidil alone	--	Positive	--
None	--	Positive	--

最佳服用时间： Use device for recommended duration 3 times per week on non-consecutive days

Safety & Side Effects

已报告的副作用

⚠ Mild scalp warmth or tingling
⚠ Headache (uncommon)
⚠ Initial shedding phase (rare)
⚠ Dry scalp

已知相互作用

● Photosensitizing medications (tetracyclines, fluoroquinolones) may increase scalp sensitivity
● No significant interactions with oral hair loss medications

可耐受最高摄入量： Not applicable

在开始服用任何补充剂之前，请务必咨询您的医疗保健提供者。

Frequently Asked Questions

Does 低能量激光疗法（LLLT） help with 雄激素性脱发?

Based on 60 studies with 11,100 participants, there is strong evidence from multiple clinical trials that 低能量激光疗法（LLLT） may support 雄激素性脱发 management. Our evidence grade is A (Strong Evidence).

How much 低能量激光疗法（LLLT） should I take for 雄激素性脱发?

Studies have used various dosages. A commonly studied range is 8-15 minutes, 3x/week. Always consult your healthcare provider before starting any supplement regimen.

Are there side effects of 低能量激光疗法（LLLT）?

Reported side effects may include Mild scalp warmth or tingling, Headache (uncommon), Initial shedding phase (rare), Dry scalp. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.

How strong is the evidence for 低能量激光疗法（LLLT） and 雄激素性脱发?

We rate the evidence as Grade A (Strong Evidence). This rating is based on 60 peer-reviewed studies with 11,100 total participants. The overall direction of effect is positive.

Related Evidence

其他成分用于雄激素性脱发

米诺地尔（Minoxidil） A 非那雄胺（Finasteride） A PRP 疗法 A 度他雄胺（Dutasteride） A Omega-3 脂肪酸 A 微针疗法 A

低能量激光疗法（LLLT）用于其他健康状况

女性型脱发 A

快速结论

基于58项研究（7项荟萃分析、8项RCT），共11,100名参与者。49/58项研究显示积极效果。

Evidence Strength92%

High confidence

研究分析

RCT (7)Meta (9)Other (44)

对比替代方案

查看其他成分针对该健康状况的对比结果。

查看所有成分用于雄激素性脱发

了解更多

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低能量激光疗法（LLLT） 用于 雄激素性脱发

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结论

Key Study Findings

Key Statistics

Referenced Papers

Dosage & Usage

常用剂量

研究中使用的剂量

Safety & Side Effects

已报告的副作用

已知相互作用

Frequently Asked Questions

Related Evidence

其他成分用于 雄激素性脱发

低能量激光疗法（LLLT） 用于其他健康状况

低能量激光疗法（LLLT）用于雄激素性脱发

其他成分用于雄激素性脱发

低能量激光疗法（LLLT）用于其他健康状况