Best For Skin Types
All, Oily, Combination
Addresses
Usage Frequency
Daily
What Is Citrus Grandis Leaf Extract?
Citrus Grandis Leaf Extract is derived from the leaves of the pomelo (grapefruit) tree. Traditionally considered agricultural waste, these leaves contain phenolic compounds and flavonoids that have been the subject of botanical research. The extract is obtained through methods such as ultrasonic extraction or steam distillation, which isolate the plant's bioactive constituents.
In skincare formulations, this ingredient functions primarily as a skin conditioner and astringent. It contributes a citrus fragrance note whilst providing plant-derived compounds that research suggests may offer antioxidant and antimicrobial properties to topical applications.
How It Works
The leaf extract's primary mechanism appears to involve its phenolic and flavonoid content. These plant compounds are thought to neutralise reactive oxygen species (ROS) and free radicals through electron donation, supporting skin's natural defence systems. Laboratory studies suggest the extract may also activate cellular stress-response pathways, though whether these translate meaningfully to topical application remains unclear.
The astringent effect is likely due to the polyphenol content, which can temporarily contract skin proteins and reduce the appearance of pore size. As a skin conditioner, the extract works as part of a formulation to maintain moisture and improve skin feel.
Clinical Evidence & References
In-vitro studies demonstrate that Citrus Grandis leaf extract possesses antioxidant, antimicrobial, and antityrosinase activities in laboratory conditions. Research using optimised extraction methods has confirmed the presence of bioactive phenolic compounds. Studies in cell cultures have suggested potential benefits for skin health, including activation of protective cellular pathways and reduction of oxidative stress markers.
However, human clinical trials on this ingredient in skincare products are limited. Most evidence comes from botanical studies rather than cosmetic efficacy trials on living skin. Whilst the antioxidant and antimicrobial properties shown in vitro are promising, the extent to which these benefits transfer to real-world skincare use requires further investigation.
How to Use
Citrus Grandis Leaf Extract is typically incorporated into serums, toners, and creams as part of a broader formulation rather than used in isolation. It is well-suited to products designed for antioxidant support or light astringency. Since it contributes fragrance, consider your tolerance to citrus scents. Use as directed on the product label, usually daily as part of your morning or evening routine.
Safety & Precautions
Frequently Asked Questions
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