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Thérapie laser de faible intensité pour Alopécie Androgénétique

A Preuves Plusieurs grands essais cliniques montrent de manière constante des bénéfices significatifs.

Basé sur 58 études (7 meta-analyses, 8 RCTs) avec 11,100 participants au total. 49/58 études montrent des effets positifs.

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A

En conclusion

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

Key Statistics

60

Études

11100

Participants

Positive

A

Note

Referenced Papers

International journal of … 2024 39 citations
Journal of clinical … 2024 10 citations
Facial plastic surgery … 2024 8 citations
Revue medicale suisse 2024 2 citations
Clinical, cosmetic and … 2023 58 citations
American journal of … 2023 41 citations
Clinics in plastic … 2023 1 citations
Dermatology and therapy 2022 43 citations
Journal of cutaneous … 2021 44 citations
Actas dermo-sifiliograficas 2021 3 citations
Expert opinion on … 2020 147 citations
Dermatologic therapy 2020 48 citations
Acta dermatovenerologica Alpina, … 2019 7 citations
Lasers in medical … 2018 75 citations
Lasers in surgery … 2017 71 citations
Actas dermo-sifiliograficas 2017 17 citations
The Cochrane database … 2016 18 citations
Lasers in surgery … 2014 243 citations
Facial plastic surgery … 2013 16 citations

Dosage & Usage

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

Posologies couramment utilisées

hairloss:
8-15 minutes, 3x/week

Limite supérieure : Not applicable

Posologies étudiées dans la recherche

Posologie Durée Effet 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 --

Moment optimal de prise : Use device for recommended duration 3 times per week on non-consecutive days

Safety & Side Effects

Effets indésirables signalés

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

Interactions connues

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

Apport maximal tolérable : Not applicable

Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.

Frequently Asked Questions

Does Thérapie laser de faible intensité help with Alopécie Androgénétique?
Based on 60 studies with 11,100 participants, there is strong evidence from multiple clinical trials that Thérapie laser de faible intensité may support Alopécie Androgénétique management. Our evidence grade is A (Strong Evidence).
How much Thérapie laser de faible intensité should I take for Alopécie Androgénétique?
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 Thérapie laser de faible intensité?
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 Thérapie laser de faible intensité and Alopécie Androgénétique?
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.

Thérapie laser de faible intensité pour d'autres pathologies

References

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