Science
Mechanism of Action
This oil functions as an antioxidant by leveraging components such as carotenoids, flavonoids, and coumarins to neutralize environmental and oxidative damage. Its anti-inflammatory action involves inhibiting the production of nitric oxide (NO) and prostaglandin E2 (PGE2), alongside suppressing key inflammatory cytokines (IL-1beta, TNF-alpha, and IL-6). Furthermore, it exhibits antimicrobial capabilities against various bacteria, notably P. acnes.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Due to the presence of limonene, a major component in citrus oils, formulations should minimize peroxide levels (ideally < 20 millimoles peroxides per liter) by incorporating antioxidants during production to maintain stability and safety.
Safety
Safety Profile
The CIR Expert Panel deems Citrus flower and leaf-derived ingredients, including Citrus unshiu flower-derived ingredients, safe for use when formulated to be non-irritating and non-sensitizing. A key concern is the potential for hydroperoxides of limonene and linalool in citrus essential oils, which necessitates good manufacturing practices, including antioxidant addition, to limit these impurities and mitigate sensitization risk. The FDA recognizes certain citrus essential oils as GRAS for food use, suggesting general safety for cosmetic applications.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Citrus Unshiu Flower Oil is a valuable ingredient, offering significant anti-inflammatory, antioxidant, and antimicrobial benefits for normal and oily skin types, provided it is carefully formulated to manage potential sensitization risks associated with oxidized components.
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References
Sources