Science
Mechanism of Action
This extract is a rich source of beneficial phytochemicals including polyphenols, flavonoids, ascorbic acid, and carotenoids. Its primary mechanisms involve potent antioxidant activity, achieved by scavenging free radicals and mitigating oxidative stress. It also demonstrates anti-inflammatory effects by reducing pro-inflammatory markers such as IL-6 and TNF-α. Furthermore, it can inhibit tyrosinase activity and melanin synthesis, leading to skin brightening, and may possess anti-aging potential by reducing collagenase and elastase activity.
Research
Clinical Evidence
Medium confidence2%
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As a botanical ingredient, careful formulation is crucial to ensure it is non-irritating and non-sensitizing. Particular attention must be paid to constituents such as limonene, citral, and furocoumarins (e.g., 5-methoxypsoralen, 7-methoxycoumarin), which can cause adverse effects at high levels. For leave-on products, the 5-methoxypsoralen (5-MOP) content must not exceed 0.0015% (15 ppm). The potential for additive phototoxic effects when combined with other ingredients should also be evaluated.
Conflicts
- High concentrations of sensitizing constituents (e.g., limonene, citral, furocoumarins)
- Ingredients that contribute to phototoxicity beyond acceptable limits (especially 5-MOP)
Safety
Safety Profile
The CIR Expert Panel deems 'Citrus peel-derived ingredients,' including Citrus Tamurana, safe for use in cosmetic products (rinse-off and leave-on) provided they are formulated to be non-sensitizing and non-irritating. A critical restriction for leave-on products is that 5-methoxypsoralen (5-MOP) content must not exceed 0.0015% (15 ppm). Manufacturers must also ensure that levels of other potential sensitizers like limonene and citral remain below thresholds that could cause adverse reactions. Certain citrus extracts are also FDA GRAS for food use.
Your Skin
Skin Compatibility
Our Assessment
Verdict
This valuable extract offers broad benefits including antioxidant protection, skin brightening, and anti-inflammatory effects, requiring careful formulation to adhere to phototoxicity and sensitization guidelines.
Related
Similar Ingredients
Finding similar ingredients…