低出力レーザー治療 ： 女性型脱毛症
A合計5,391名の参加者を対象とした8件の研究（メタアナリシス1件、RCT 2件を含む）に基づく。8件中7件の研究で肯定的な効果が示されている。
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A
結論
Low-level laser therapy has strong evidence for female pattern hair loss and represents one of the best-supported non-medication options available for women experiencing this condition.
- 7 out of 8 studies report positive effects, including well-designed RCTs with sham controls
- Especially relevant for women who may want to avoid oral medications
- Included in international clinical guidelines for female pattern hair loss
- Both clinical treatments and at-home devices have shown effectiveness in studies
Key Study Findings
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
効果: Both groups improved QoL and hair density; PBMt + MIN showed significantly greater reduction in telo
None
Randomized Controlled Trial
24 weeks
Single-blind
Comparative efficacy of 2% minoxidil alone against combination of 2% minoxidil and low-level laser therapy …
Dose: None
vs: None
Outcome: None
効果: None
None
対象集団: None
Randomized Controlled Trial
Comparison of low-level light therapy and combination therapy of 5% minoxidil in the treatment of …
Dose: 3 g
vs: control
Outcome: None
効果: None
P < 0.05
対象集団: None
prospective interventional study (single-arm)
n=20
16 weeks
Results of low-level laser therapy in the treatment of hair growth: An Egyptian experience.
Dose: 20 minutes, 2 sessions/week for 16 weeks (32 total sessions)
vs: Placebo
効果: FPHL: 222.3 to 255.3 hairs/cm² (p=0.007); TE: 271.2 to 294.2 hairs/cm² (p=0.143)
0.007 (FPHL); 0.143 (TE)
Review
Female pattern hair loss: A comprehensive review.
Dose: None
vs: None
Outcome: None
効果: None
None
対象集団: Female pattern hair loss patients
Review
16 weeks
Examining the Safety and Efficacy of Low-Level Laser Therapy for Male and Female Pattern Hair …
Dose: Low-level laser therapy (LLLT), 600-1100 nm wavelength, treatment ≥16 weeks
vs: Placebo
効果: All 8 sham-controlled studies showed statistically significant increase in hair diameter or density
p < 0.01 (all sham-device cont
Key Statistics
14
研究数
5537
参加者数
↑
Positive
A
グレード
Referenced Papers
Lasers in medical …
2025
1 件の引用
Photodiagnosis and photodynamic …
2024
7 件の引用
Lasers in medical …
2021
17 件の引用
Dermatologic therapy
2021
12 件の引用
Dermatologic therapy
2020
48 件の引用
Skin appendage disorders
2020
32 件の引用
Lasers in medical …
2019
88 件の引用
Efficacy of non-surgical treatments for androgenetic alopecia: a systematic review and network meta-analysis.
Meta-Analysis
Journal of the …
2018
80 件の引用
The Journal of …
2018
69 件の引用
Lasers in medical …
2016
83 件の引用
Interventions for female pattern hair loss.
Meta-Analysis
The Cochrane database …
2016
18 件の引用
American journal of …
2014
184 件の引用
International journal of …
2014
63 件の引用
Facial plastic surgery …
2008
Dosage & Usage
mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units
一般的な使用量
- hairloss:
- 8-15 minutes, 3x/week
上限量： Not applicable
研究で検討された用量
| 用量 | 期間 | 効果 | N |
|---|---|---|---|
| Photobiomodulation therapy (PBMt; red laser 100mW, 4J/point, 25 sessions, twice weekly) + minoxidil | 12.5 weeks | Positive | 9 |
| None | 24 weeks | Positive | -- |
| 3 g | -- | Positive | -- |
| 20 minutes, 2 sessions/week for 16 weeks (32 total sessions) | 16 weeks | Positive | 20 |
| None | -- | Negative | -- |
| Low-level laser therapy (LLLT), 600-1100 nm wavelength, treatment ≥16 weeks | 16 weeks | Positive | -- |
| finasteride 1 mg/d, dutasteride 0.5 mg/d, topical minoxidil 5% twice daily (MPHL); topical minoxidil | -- | Positive | -- |
| None | -- | Mixed | -- |
推奨摂取タイミング： Use device for recommended duration 3 times per week on non-consecutive days
Safety & Side Effects
報告されている副作用
- ⚠ Mild scalp warmth or tingling
- ⚠ Headache (uncommon)
- ⚠ Initial shedding phase (rare)
- ⚠ Dry scalp
既知の相互作用
- ● Photosensitizing medications (tetracyclines, fluoroquinolones) may increase scalp sensitivity
- ● No significant interactions with oral hair loss medications
耐容上限摂取量： Not applicable
サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。
Frequently Asked Questions
Does 低出力レーザー治療 help with 女性型脱毛症?
Based on 14 studies with 5,537 participants, there is strong evidence from multiple clinical trials that 低出力レーザー治療 may support 女性型脱毛症 management. Our evidence grade is A (Strong Evidence).
How much 低出力レーザー治療 should I take for 女性型脱毛症?
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 低出力レーザー治療?
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 低出力レーザー治療 and 女性型脱毛症?
We rate the evidence as Grade A (Strong Evidence). This rating is based on 14 peer-reviewed studies with 5,537 total participants. The overall direction of effect is positive.
Related Evidence
に関する他の成分： 女性型脱毛症
低出力レーザー治療 他の症状・状態について
FDAに関する免責事項: これらの記述は米国食品医薬品局（FDA）による評価を受けていません。本ウェブサイトの製品および情報は、疾病の診断、治療、治癒、または予防を目的としたものではありません。表示されているエビデンスグレードは、公開された査読済み研究の分析に基づいており、医療上の助言を構成するものではありません。サプリメントの摂取を開始する前に、必ず医療専門家にご相談ください。