Terapia a laser de baixa intensidade para Alopecia Androgenética

Baseado em 58 estudos (7 meta-analyses, 8 RCTs) com 11,100 participantes no total. 49/58 estudos mostram efeitos positivos.

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Conclusão

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 Efeito: 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 Efeito: 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 Efeito: 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 Efeito: 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 Efeito: 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 Efeito: Both groups improved QoL and hair density; PBMt + MIN showed significantly greater reduction in telo None

Key Statistics

Estudos

11100

Participantes

↑

Positive

Nota

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 citações

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

Cureus 2025 2 citações

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

Journal of cutaneous … 2025 2 citações

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

Lasers in medical … 2025 1 citações

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 citações

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 citações

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 citações

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

Journal of controlled … 2024 30 citações

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

Health science reports 2024 14 citações

Physical Treatments and Therapies for Androgenetic Alopecia. Review

Journal of clinical … 2024 10 citações

Medical Treatment for Androgenetic Alopecia. Other

Facial plastic surgery … 2024 8 citações

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

Journal of cosmetic … 2024 8 citações

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 citações

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

Revue medicale suisse 2024 2 citações

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

Clinical, cosmetic and … 2023 58 citações

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

American journal of … 2023 41 citações

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

Journal of cosmetic … 2023 11 citações

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

International journal of … 2023 10 citações

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

Journal of cosmetic … 2023 2 citações

Noninvasive Hair Rejuvenation. Review

Clinics in plastic … 2023 1 citações

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

Dermatology and therapy 2022 43 citações

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 citações

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 citações

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 citações

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

Journal of cutaneous … 2021 44 citações

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 citações

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 citações

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 citações

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

Dermatologic therapy 2021 12 citações

Low-Level Laser Therapy for Androgenetic Alopecia. Other

Actas dermo-sifiliograficas 2021 3 citações

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

Expert opinion on … 2020 147 citações

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 citações

Female pattern hair loss: A comprehensive review. Review

Dermatologic therapy 2020 48 citações

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 citações

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

Dermatologic therapy 2020 30 citações

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

Lasers in medical … 2020 17 citações

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 citações

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

Dermatologic therapy 2019 124 citações

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 citações

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

Clinical, cosmetic and … 2019 41 citações

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 citações

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

Acta dermatovenerologica Alpina, … 2019 7 citações

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 citações

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

Journal of the … 2018 80 citações

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

Lasers in medical … 2018 75 citações

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

The Journal of … 2018 69 citações

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

Journal of cosmetic … 2018 13 citações

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

Actas dermo-sifiliograficas 2018 9 citações

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

Journal of the … 2017 343 citações

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

Lasers in surgery … 2017 71 citações

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

Dermatologic surgery : … 2017 43 citações

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

Dermatologic surgery : … 2017 39 citações

New Treatments for Hair Loss. Review

Actas dermo-sifiliograficas 2017 17 citações

[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 citações

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

Lasers in surgery … 2014 243 citações

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

Lasers in surgery … 2014 104 citações

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

International journal of … 2014 63 citações

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

Lasers in surgery … 2013 140 citações

Nonsurgical therapy for hair loss. Review

Facial plastic surgery … 2013 16 citações

Dosage & Usage

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

Dosagens Comumente Utilizadas

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

Limite superior: Not applicable

Dosagens Estudadas em Pesquisas

Dosagem	Duração	Efeito	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	--

Melhor horário: Use device for recommended duration 3 times per week on non-consecutive days

Safety & Side Effects

Efeitos Colaterais Relatados

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

Interações Conhecidas

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

Ingestão máxima tolerável: Not applicable

Consulte sempre o seu profissional de saúde antes de iniciar qualquer suplemento.Sempre consulte seu profissional de saúde antes de iniciar qualquer suplemento.

Frequently Asked Questions

Does Terapia a laser de baixa intensidade help with Alopecia Androgenética?

Based on 60 studies with 11,100 participants, there is strong evidence from multiple clinical trials that Terapia a laser de baixa intensidade may support Alopecia Androgenética management. Our evidence grade is A (Strong Evidence).

How much Terapia a laser de baixa intensidade should I take for Alopecia Androgenética?

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 Terapia a laser de baixa intensidade?

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 Terapia a laser de baixa intensidade and Alopecia Androgenética?

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

Outros ingredientes para Alopecia Androgenética

Minoxidil A Finasteride A Terapia PRP A Dutasteride A Ácidos graxos ômega-3 A Microagulhamento A

Terapia a laser de baixa intensidade para outras condições

Perda Capilar de Padrão Feminino A

Veredito Rápido

Baseado em 58 estudos (7 meta-analyses, 8 RCTs) com 11,100 participantes no total. 49/58 estudos mostram efeitos positivos.

Evidence Strength92%

High confidence

Detalhamento dos Estudos

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

Comparar Alternativas

Veja como outros ingredientes se comparam para esta condição.

Ver todos os ingredientes para Alopecia Androgenética

Saiba Mais

Aviso Legal da FDA: Estas declarações não foram avaliadas pela Food and Drug Administration. Os produtos e informações neste site não se destinam a diagnosticar, tratar, curar ou prevenir qualquer doença. As notas de evidência apresentadas são baseadas em nossa análise de pesquisas revisadas por pares publicadas e não constituem aconselhamento médico. Sempre consulte seu profissional de saúde antes de iniciar qualquer regime de suplementação.