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Óleo de alecrim para Alopecia Androgenética

B

Baseado em 10 estudos (1 meta-analysis). 9/10 estudos mostram efeitos positivos.

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B

Conclusão

Moderate evidence suggests rosemary oil may help support hair growth in androgenetic alopecia, though more large-scale clinical trials are needed to confirm its effectiveness.

  • 9 out of 10 studies report positive effects
  • Included in Canadian consensus guidelines as a complementary option
  • May work through improved scalp circulation and anti-inflammatory activity
  • More controlled clinical trials with larger sample sizes are needed

Key Study Findings

Other
Alopecia Management Potential of Rosemary-Based Nanoemulgel Loaded with Metformin: Approach Combining Active Essential Oil and …
Dose: None vs: Control groups and minoxidil Outcome: Hair follicle count in rat model Efeito: None None

População: Androgenetic alopecia rat model

Systematic Review 24 weeks
Relative Efficacy of Conventional Monotherapies and Select Nonconventional, Over-the-Counter Products for Male Androgenetic Alopecia: A …
Dose: None vs: Placebo Outcome: Change in total hair density at 24 weeks Efeito: None None

População: Males with androgenetic alopecia

review Single-blind
Do Non-Prescription Products Help in Managing Androgenic Alopecia?
Dose: Various non-prescription agents: procyanidin, cetirizine, caffeine, Oryza sativa bran, pumpkin seed vs: Placebo Efeito: Considerable improvements in one or more parameters across 13 included studies None
narrative review
Herbal Remedies for Hair Loss: A Review of Efficacy and Safety.
Dose: varies by remedy and study vs: Placebo Efeito: None None

Key Statistics

13

Estudos

50

Participantes

Positive

B

Nota

Referenced Papers

Skin appendage disorders 2025 7 citações
Naunyn-Schmiedeberg's archives of … 2025 4 citações
Journal of cutaneous … 2025 2 citações
Skin appendage disorders 2025 1 citações
Journal of inflammation … 2024 11 citações
Dermatologic therapy 2022 41 citações
Journal of cosmetic … 2019 100 citações

Dosage & Usage

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

Dosagens Comumente Utilizadas

topical:
2-5% dilution, applied to scalp

Limite superior: Topical only; do not ingest concentrated oil

Dosagens Estudadas em Pesquisas

Dosagem Duração Efeito N
None -- Positive --
None 24 weeks Positive --
Various non-prescription agents: procyanidin, cetirizine, caffeine, Oryza sativa bran, pumpkin seed -- Positive --
varies by remedy and study -- Positive --
None -- Positive --
None -- Positive --
various CAMs: pumpkin seed oil, saw palmetto, melatonin extract, caffeine extract, rosemary oil -- Positive --
not specified -- Positive --

Melhor horário: Apply diluted oil to scalp and massage for 5 minutes; leave on 30+ minutes or overnight

Safety & Side Effects

Efeitos Colaterais Relatados

  • Contact dermatitis or scalp irritation
  • Allergic reactions in sensitive individuals
  • Eye irritation if contact occurs

Interações Conhecidas

  • Anticoagulants (rosemary may have mild blood-thinning properties topically)
  • Other topical hair loss treatments (use at separate times to avoid irritation)

Ingestão máxima tolerável: Topical only; do not ingest concentrated oil

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 Óleo de alecrim help with Alopecia Androgenética?
Based on 13 studies with 50 participants, there is moderate evidence from clinical studies that Óleo de alecrim may support Alopecia Androgenética management. Our evidence grade is B (Good Evidence).
How much Óleo de alecrim should I take for Alopecia Androgenética?
Studies have used various dosages. A commonly studied range is 2-5% dilution, applied to scalp. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of Óleo de alecrim?
Reported side effects may include Contact dermatitis or scalp irritation, Allergic reactions in sensitive individuals, Eye irritation if contact occurs. Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for Óleo de alecrim and Alopecia Androgenética?
We rate the evidence as Grade B (Good Evidence). This rating is based on 13 peer-reviewed studies with 50 total participants. The overall direction of effect is positive.

Related Evidence

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.