迷迭香油 Rosemary Oil × 雄性禿（雄性遺傳性禿髮）
結論：台灣市場資訊黑箱
整體證據處於薄弱證據（Tier C）：僅有 Panahi 2015 單一 RCT（n=100）顯示 rosemary oil 0.
C 🟠 C 薄弱證據 台灣法規禁言 🚨 high — heavy affiliate marketing in TW community
整體證據處於薄弱證據（Tier C）：僅有 Panahi 2015 單一 RCT（n=100）顯示 rosemary oil 0.1% 對比 minoxidil 2% topical 在毛髮計數上 non-inferior，但十年來無任何獨立複製研究，且該試驗為單中心（伊朗）並使用次佳對照組（標準應為 minoxidil 5%）。
Cleveland Clinic 雖採 cautiously_supportive 立場明確引用此 2015 研究，但 Mayo、Harvard、AAD 三大主流均無對應內容支持，學會層級無共識。
L1 Examine 無研究資料庫條目進一步佐證。
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評分透明度
所有分數由 7 層證據引擎計算，過程公開可查原始分數 0.63
D
C
B
A
S
← 反證據 / 無效有效 / 強證據 →
最終評級
C · 台灣法規禁言
信心度
47%
證據方向分歧
證據層級
E2
多篇高品質統合分析（≥2 篇一致）
▸查看完整決策路徑（audit trail）
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.625
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (2 篇 > 0 negative)
- tier_strict_requirement_check — | B→C 因 scope.conflation_risk=true 且 L11 獨評較低 (B7-2 tier cap)
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status
Relative Efficacy of Conventional Monotherapies and Select Nonconventional, Over-the-Counter Products for Male Androgenetic Alopecia: A Network Meta-Analysis Study
結論：Bayesian network meta-analysis of 24 trials covering 8 conventional drugs and 7 OTC products: topical rosemary oil produced +19.53 hairs/cm2 at 24 weeks (comparable to topical minoxidil at +18.96), but topical minoxidil 5% twice daily was overwhelmingly the most effective treatment (SUCRA 99.8%), with rosemary/melatonin ranking far below the conventional drugs.
前往 PubMed Comparative Effect of Conventional and Non-Conventional Over-the-Counter Treatments for Male Androgenetic Alopecia: A Systematic Review and Network Meta-Analysis
結論：Bayesian NMA of 15 trials (9 active comparators): topical rosemary oil gave a statistically significant but modest +10.63 hairs/cm2 vs control (95% CI 0.82 to 20.89), and was significantly inferior to topical minoxidil 5% (mean difference 19.53 hairs/cm2 favoring minoxidil, 95% CI 6.52 to 32.68).
前往 PubMed Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial
結論：In 100 AGA patients (50 rosemary 0.1% vs 50 minoxidil 2%), both arms significantly increased hair count from baseline at 6 months (P<0.05) with no significant difference between arms (P>0.05), and scalp itch was significantly more frequent with minoxidil; the suboptimal 2% comparator and absence of a placebo arm limit interpretation.
前往 PubMed Rosmagain as a Natural Therapeutic for Hair Regrowth and Scalp Health: A Double-Blind, Randomized, Three-Armed, Placebo-Controlled Clinical Trial
結論：In 90 HEALTHY (non-AGA) subjects, a rosemary-lavender oil blend raised hair growth rate +57.73%, thickness +68.70%, and density +32.21% vs baseline over 90 days (all p<0.0001) versus coconut-oil control, but it tests blends rather than isolated rosemary, is industry-funded (Soulflower), and was not conducted in diagnosed AGA patients.
前往 PubMed Randomized trial of aromatherapy. Successful treatment for alopecia areata
結論：In 86 ALOPECIA AREATA (not AGA) patients, an essential-oil blend of thyme+rosemary+lavender+cedarwood in carrier oils improved 44% (19/43) vs 15% (6/41) with carrier oil alone (P=0.008); it studies a different disease and a 4-oil blend, so it cannot isolate rosemary for AGA.
前往 PubMed L4a US FDA
中性
21 CFR Citation: 182.20 | Permitted Use: FLAVORING AGENT OR ADJUVANT | FEMA No.: 2992 | CAS Registry Number: 8000-25-7 來源↗
L4b EU EFSA
中性
1,548 claims on 'botanicals' have been placed on hold by the Commission pending further consideration on how to proceed with these 來源↗
L4c UK NHS
未表態
— 本適應症無對應資料
L4d TW TFDA / 衛福部
中性
— 本適應症無對應資料
L4e WHO
未表態
— 本適應症無對應資料
L5a NIH Office of Dietary Supplements
未表態
— 本適應症無對應資料
L5b Mayo Clinic
中性
— 本適應症無對應資料
L5c Cleveland Clinic
中性
— 本適應症無對應資料
L5d Harvard Health
中性
— 本適應症無對應資料
L5e Specialty Society (condition-mapped)
中性
— 本適應症無對應資料
PTT · Dcard · Mobile01 彙整自公開論壇討論，非統計抽樣，僅反映社群風向。
廣告 / 業配密度 極高
低中高
📍立場總覽
台灣社群討論集中在芳療版（DIY 配方）而非 hair_loss 版；hair_loss 版鄉民普遍視迷迭香油為「非必需輔助」，強調未抑制 DHT 則效果有限，仍以口服藥／生髮水（big 3）為主。芳療版有人回報頭髮較清爽、感覺長得快，但無對照、反應分歧，多人提醒精油「最多保養頭皮」、不能取代醫學治療。
💬社群實感
分歧（芳療版部分正面、hair_loss 版多視為非必需輔助、無共識）
破解迷思 社群最常見的 4 個誤解
✓
事實引用 2015 伊朗研究宣稱「迷迭香油效果等同／勝過 minoxidil」（實際髮量差異未達統計顯著）
✓
事實認為單用迷迭香油即可治療雄性禿，忽略需先抑制 DHT
✓
事實以為把迷迭香精油加進洗髮精就有效（停留時間太短，保養遠大於生髮）
✓
事實把芳療頭皮保養誤當成生髮治療
🩹 社群通報的副作用
- 頭皮涼感／後勁強（薄荷複方常見）
- 頭皮刺激／不適（高濃度時）
- 外用 Minoxidil（落健）
- 口服 Finasteride（柔沛）
- 低能量雷射治療（LLLT）
查看 ClaimReview 結構化資料 (JSON-LD)
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