Science
Mechanism of Action
This extract operates through multiple synergistic pathways to significantly improve skin health. It critically boosts human fibroblast proliferation and stimulates procollagen synthesis, directly contributing to enhanced skin firmness and elasticity. Its brightening efficacy stems from a reduction in melanin content within melanocytes, likely mediated by anti-tyrosinase activity. Rich in powerful antioxidant compounds such as carotenoids, coumarins, limonoids, and flavonoids, it effectively neutralizes free radicals and mitigates UV-induced damage. Furthermore, it exhibits anti-inflammatory properties by inhibiting nitric oxide, which helps to calm irritation and supports the skin's natural regeneration and renewal processes.
Research
Clinical Evidence
Medium confidenceN/A
Key findings
- 01 An in vitro study utilizing Citrus junos callus extract at a concentration of 500 µg/mL demonstrated a significant promotion of human fibroblast proliferation (154% increase) and procollagen synthesis (176% increase). This application also resulted in a 1.85-fold reduction in the melanin content of melanocytes.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
For optimal stability, store in a cool, dry, and ventilated area with desiccant, protected from high temperature and direct sunlight, within a closed container.
Conflicts
- Ingredients known to cause sensitization or irritation
- Ingredients that contribute to high levels of furanocoumarins (e.g., 5-MOP, limonene, citral) if not carefully formulated to remain within safety limits, due to potential photosensitization
Safety
Safety Profile
Citrus fruit-derived ingredients, including Citrus Unshiu Callus Extract, are considered safe for use in rinse-off and leave-on cosmetic products when formulated to be non-sensitizing and non-irritating. For leave-on products, the concentration of 5-methoxypsoralen (5-MOP) must not exceed 0.0015% (15 ppm). The U.S. FDA recognizes citrus fruits as Generally Recognized As Safe (GRAS) for food use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Citrus Unshiu Callus Extract is a valuable multi-functional ingredient, offering significant anti-aging, brightening, and protective benefits, provided it is precisely formulated to adhere to safety guidelines regarding furanocoumarin levels.
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