CITRUS GRANDIS PEEL EXTRACT

📋 Quick facts

Description: CITRUS GRANDIS PEEL EXTRACT — antioxidant, fragrance (Grapefruit Peel).

All Functions: antioxidant, fragrance (Grapefruit Peel)

Quick Facts:

• Category: active
• Regulatory Note: Prohibited in the EU

Proven Benefits At A Glance:

• Citrus grandis peel extract comes from pomelo fruit, where the peel makes up about 30% of the fruit’s weight
• The extract contains phytochemicals including flavonoids, phenolic acids, carotenoids, and polysaccharides
• Research shows antioxidant, anti-inflammatory, and antimicrobial properties in laboratory and animal studies
• Studies are mostly preclinical (lab-based and animal models); human skin studies are not included in available research
• The ingredient is being studied as a potential functional food component rather than as a cosmetic ingredient

📊 Comedogenicity

🛡️ Safety rating

Safety tier is a starting heuristic from regulatory status and comedogenic rating, not a dermatological verdict — see our Terms for the full disclaimer. Research confidence reflects how many real cited studies back this ingredient, not the strength of their findings.

🌍 Regulatory Status

💧 Skin Type Compatibility

⚠️ Don’t Combine With

📚 Research & Evidence

🔬 The Science

Citrus grandis peel extract is derived from pomelo (also called shaddock), the largest citrus fruit species. The peel, which represents roughly 30% of total fruit weight, is rich in bioactive compounds including essential oils, polysaccharides, flavonoids, phenolic acids, carotenoids, coumarins, and aroma-active volatiles (Compr Rev Food Sci Food Saf, 2020). These components form the basis of the extract’s studied properties. Research into citrus peel extracts has identified several areas of biological activity, though important caveats apply: #1: Antioxidant activity — multiple studies document that citrus peel extracts reduce oxidative stress markers in animal models, including measures like thiobarbituric acid reactive substances and malondialdehyde (Biomed Res Int, 2022; Tissue Cell, 2024).

#2: Anti-inflammatory effects — the extracts showed reduced inflammatory markers including tumor necrosis factor-alpha in rat cardiac tissue studies (Biomed Res Int, 2022) and reduced inflammation markers in liver toxicity models (Tissue Cell, 2024). #3: Antimicrobial properties — one study documented activity against Cryptosporidium parasites in mice intestines, with high-dose treatment showing significant reduction in parasite shedding by day 22 (Exp Parasitol, 2022), though this was a parasite model rather than bacteria. It’s crucial to note that all available research uses animal models or laboratory settings (in vitro studies). The Compr Rev Food Sci Food Saf (2020) review explicitly describes these as “preclinical evidence.” No human skin studies appear in these sources.

Additionally, most research focuses on the extract’s potential as a food or pharmaceutical ingredient for systemic health rather than topical skincare applications. The liver and metabolic effects documented in rats (Nutrients, 2020; Biomed Res Int, 2022) relate to oral supplementation, not skin application. Without human clinical data or studies on topical skin application specifically, claims about direct skincare benefits would exceed what these sources support.

📄 Related Research

Matched by search — not necessarily verified support for every statement above.

• Tocmo R et al. (2020). Valorization of pomelo (Citrus grandis Osbeck) peel: A review of current utilization, phytochemistry, bioactivities, and mechanisms of action. Compr Rev Food Sci Food Saf.
• Lee GH et al. (2020). Citrus Peel Extract Ameliorates High-Fat Diet-Induced NAFLD via Activation of AMPK Signaling. Nutrients.
• Najar IA et al. (2022). Cardioprotection by Citrus grandis (L.) Peel Ethanolic Extract in Alloxan-Induced Cardiotoxicity in Diabetic Rats. Biomed Res Int.
• Abd El Wahab WM et al. (2022). Anti-Cryptosporidium efficacy of Citrus sinensis peel extract: Histopathological and ultrastructural experimental study. Exp Parasitol.
• Rahib A et al. (2024). Citrus reticulata peel extract mitigates oxidative stress and liver injury induced by abamectin in rats. Tissue Cell.

🧴 Products Containing CITRUS GRANDIS PEEL EXTRACT