Royal Jelly Extract
Also known as Royal jelly extract, Apis mellifera royal jelly extract, Bee milk extract
“No regulator has issued a verdict on this ingredient.”
ROYAL JELLY EXTRACT (CAS 91081-56-0, EC 293-662-7) is a cosmetic preparation derived from the milky pharyngeal-gland secretion of honeybees (Apis mellifera) fed to queen-destined larvae. It is marketed for skin-conditioning, hydration, and anti-aging claims; active constituents include major royal jelly proteins (MRJP1-9, with MRJP1/royalactin most abundant), 10-hydroxy-2-decenoic acid (10-HDA, a signature fatty acid), B-vitamins, free amino acids, and minerals. Verified ABSENT from both the September 2022 CIR Quick Reference Table and the December 2025 CIR QRT — CIR has not published a safety assessment on royal jelly or royal jelly extract as of the December 2025 QRT publication. This packet drops the cir scope honestly per the F3 coverage-scope-integrity rule rather than fabricate a non-existent QRT row. Topical-efficacy evidence: a 2022 placebo-controlled double-blind RCT in 35 Japanese volunteers (Maeda et al., PMID 35778882) demonstrated significantly increased stratum corneum water content after 4 weeks of facial essence application versus placebo, with no adverse events reported. ALLERGENICITY EVIDENCE (the dominant safety signal for this ingredient): royal jelly is a documented severe-allergy trigger. Thien et al. 1996 (PMID 8835130) characterized 7 cases of asthma and anaphylaxis after royal jelly ingestion as IgE-mediated hypersensitivity, identifying 18 distinct IgE-binding protein components. Li et al. 2022 (PMID 35221696) identified Major Royal Jelly Protein 3 (MRJP3) as a primary anaphylaxis-inducing allergen with cross-reactivity to honeycomb. Takahashi et al. 1983 (PMID 6653102) reported a topical contact-dermatitis case after cutaneous royal jelly application, with 2 of 10 control subjects also showing positive patch-test reactions, indicating notable sensitization potential in the general population — directly relevant to cosmetic exposure. The 2025 Matuszewska-Mach et al. review (PMID 41465502, IJMS) reports specific IgE to royal jelly detected in up to 17% of adult asthma patients and one-third of atopic dermatitis patients, with cross-reactivity to honeybee venom and environmental allergens (dust mites, crab, cockroach); the review distinguishes Type IV T-cell-mediated reactions (predominant route for topical bee-product exposure, manifesting as allergic contact dermatitis) from Type I IgE-mediated immediate reactions (predominant for oral exposure, manifesting as anaphylaxis/urticaria/angioedema). Bottom line: cosmetic-grade royal jelly extract has limited efficacy support for hydration/skin-conditioning claims, but the allergenicity signal is substantial and cannot be ignored — particularly for users with a history of bee-product allergy, asthma, atopic dermatitis, or known sensitization to bee venom or related cross-reactive allergens.
Hydration / skin-conditioning efficacy: Maeda et al. 2022 reported a placebo-controlled double-blind RCT in 35 Japanese volunteers showing significantly increased stratum corneum water content of cheeks after 4 weeks of facial essence application containing royal jelly extract, with no adverse events recorded.
Rich nutrient profile: royal jelly contains major royal jelly proteins (MRJP1/royalactin and MRJP1-9), 10-hydroxy-2-decenoic acid (10-HDA, a signature fatty acid), B-complex vitamins, 17 free amino acids, sugars (fructose/glucose), and trace minerals — supporting its positioning as a skin-conditioning/'anti-aging' active in cosmetics.
Long history of cosmetic and food use across East Asian and European traditions — though long use is not a substitute for formal safety assessment, and the absence of a CIR review remains a meaningful regulatory gap.
Typical cosmetic concentration range 0.1-5%; commercially available extract products (e.g., Extrapone Royal Jelly) are often diluted formulations (~0.025:1 royal jelly to carrier) in propylene glycol/water systems.
ROYAL JELLY IS A DOCUMENTED SEVERE-ALLERGY TRIGGER. Anaphylaxis case reports include Thien et al. 1996 (PMID 8835130, 7 cases of IgE-mediated asthma/anaphylaxis) and Li et al. 2022 (PMID 35221696, anaphylaxis attributed to Major Royal Jelly Protein 3 with cross-reactivity to honeycomb). The 2025 Matuszewska-Mach et al. review reports specific IgE to royal jelly in up to 17% of adult asthmatics and one-third of atopic dermatitis patients. People with a history of asthma, eczema, allergic rhinitis, prior bee-product allergy, or bee-venom sensitization are at heightened risk and should avoid royal-jelly-containing topicals.
Topical contact dermatitis is documented even from cutaneous (cosmetic-route) exposure. Takahashi et al. 1983 reported a patient with contact dermatitis after applying honeybee royal jelly to feet; notably, 2 of 10 control subjects also showed positive patch-test reactions, suggesting non-trivial sensitization potential in the general population. The 2025 review confirms that Type IV T-cell-mediated allergic contact dermatitis is the predominant immune mechanism for topical bee-product exposure (distinct from the Type I IgE-mediated systemic anaphylaxis pattern more typical of oral routes).
Cross-reactivity is extensive across bee products and unrelated allergens. Royal jelly cross-reacts with honeybee venom, honeycomb, propolis, environmental allergens (house dust mites, crab, cockroach), and other Major Royal Jelly Proteins (MRJP1-3) shared across multiple bee products. Sensitization to any one bee-derived ingredient may indicate elevated risk for royal jelly reactions.
Verified ABSENT from both the September 2022 and December 2025 CIR Quick Reference Tables. CIR has not issued a safety assessment for royal jelly or royal jelly extract as of December 2025 — there is no peer-reviewed CIR Expert Panel verdict to anchor regulatory confidence. This packet drops the cir scope honestly per the F3 coverage-scope-integrity rule (parallels the ALGAE EXTRACT pattern where the umbrella INCI is verifier-substring-absent from CIR).
Animal-derived ingredient: royal jelly is a bee-secreted product (not vegan/plant-based) — relevant for ingredient transparency to users following vegan or strict ahimsa standards, and for users avoiding animal-derived cosmetic ingredients on ethical grounds.
Ingredient is a complex protein-rich biological extract with batch-to-batch variability in protein composition (MRJP1-9 abundance), 10-HDA content, and processing residues (preservatives, glycerin, propylene glycol carriers). Standardization gap means the same INCI label can mask substantial composition variance across suppliers.