Royal Jelly for Skin Aging
There is no credible human evidence that royal jelly slows skin aging, smooths wrinkles, or improves skin in any reliable way. The only supportive findings come from cell and animal studies, and major regulators have not validated any skin benefit.
Why this grade7-layer evidence engine
This rates as Unverified because the supporting research never advanced beyond laboratory models. The four studies on file are all preclinical: royal jelly raised type I procollagen and dermal thickness in ovariectomized rats (PMID 22468645) and aged mice (PMID 23657970), lowered melanin via tyrosinase suppression in cultured melanocytes (PMID 22083994), and its 10-HDA component boosted collagen in human fibroblast cultures (PMID 25789174). All were graded low quality, and none tested whether eating royal jelly actually improves human skin.
Regulators and clinics reinforce the gap. The EU's EFSA formally concluded that a cause-and-effect relationship has not been established for royal jelly's claimed effects, and the UK's NHS states there is no good evidence of health benefit. The NIH and US FDA treat it only as a supplement with no approved efficacy, while Mayo Clinic, Cleveland Clinic, Harvard Health, and the American Academy of Dermatology do not list it as a skin-aging treatment at all.
Safety also warrants caution: royal jelly can trigger serious allergic reactions, including anaphylaxis, especially in people with asthma or bee-product allergies. Until adequately powered human trials exist, royal jelly cannot be considered an effective anti-aging skin intervention; established options like daily broad-spectrum sunscreen and topical retinoids have far stronger evidence.
Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditable▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.477
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 僅有 E10 級證據 (cohort/animal/mechanism)，不足以下結論
- tier_strict_requirement_check — C 級條件未達 (需 E1-E8；實際 E10 僅機轉)
- detect_disputes — 偵測到 0 個 hard + 0 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status