Actinidia Chinensis Leaf Extract, commonly known as kiwi leaf extract, is obtained from the leaves of the Actinidia chinensis plant, known for its nutrient-rich fruits. The extract is packed with antioxidants, vitamins, and bioactive compounds that provide protective, regenerative, and moisturizing benefits to the skin. Kiwi leaves are especially valued for their high content of vitamin C and polyphenols, which help fight free radicals and enhance skin radiance.
Chemical Composition and Structure
Kiwi leaf extract contains flavonoids, vitamin C, polyphenols, and carotenoids, which play a crucial role in protecting the skin from oxidative damage. Flavonoids and polyphenols help reduce inflammation, while vitamin C stimulates collagen production, improving skin elasticity and reducing the signs of aging.
Physical Properties
The extract appears as a clear or slightly opaque liquid, water-soluble, and is used in a wide range of cosmetic products, including serums, lotions, and masks. Due to its antioxidant and regenerative properties, it is suitable for use in products aimed at enhancing skin radiance and overall skin health.
Production Process
The extract is obtained through an aqueous or solvent-based extraction process from the fresh leaves of Actinidia chinensis. The extraction process preserves the bioactive properties of the leaves, ensuring a final product rich in natural compounds beneficial for the skin.
Harvesting the Leaves: Leaves of Actinidia chinensis are harvested from mature plants. It is essential to follow sustainable harvesting practices to ensure the quality of the plant material.
Cleaning: After harvesting, the leaves are cleaned to remove dirt, residues, and impurities. This step is crucial to ensure that the final extract is of high quality.
Drying: The cleaned leaves may undergo a drying process to remove moisture. This helps preserve the active properties and facilitates subsequent extraction.
Extraction: The extraction of active principles occurs using appropriate solvents, such as water, ethanol, or methanol. The dried leaves are immersed in the solvent, and the mixture is agitated or heated to promote the release of bioactive compounds.
Filtration: Once the extraction process is complete, the obtained solution is filtered to remove undissolved solids, resulting in a liquid extract containing the active principles of the leaves.
Concentration: The extract may be further concentrated by evaporating the solvent to obtain a product richer in nutrients and with greater stability.
Quality Control and Packaging: Finally, Actinidia chinensis leaf extract undergoes quality control checks to verify its purity, efficacy, and compliance with standards. After analysis, it is packaged for distribution and use in dietary supplements and cosmetic products.
Applications
Antioxidant Skincare: With its high antioxidant content, kiwi leaf extract is ideal for protecting the skin from oxidative stress and free radical damage.
Regenerative Products: By stimulating collagen production and promoting cell renewal, the extract is an excellent ingredient for anti-aging and regenerative products.
Moisturizers: The extract's moisturizing properties help keep the skin soft and hydrated, improving its texture and radiance.
INCI Functions:
Skin protectant. It creates a protective barrier on the skin to defend it from harmful substances, irritants, allergens, pathogens that can cause various inflammatory conditions. These products can also improve the natural skin barrier and in most cases more than one is needed to achieve an effective result.
CAS: 92456-63-8 296-241-6
Health and Safety Considerations
Safety in Use
Kiwi leaf extract is considered safe for use in cosmetic products. It is well tolerated by the skin, and no significant side effects have been reported. Major regulatory authorities, such as the European Union and the FDA, approve its use in cosmetic formulations.
Allergic Reactions
Allergic reactions to kiwi leaf extract are rare, but as with any new ingredient, it is recommended to perform a patch test before use, especially for individuals with sensitive skin or allergies to kiwi fruit.
Toxicity and Carcinogenicity
It is considered safe and beneficial for the skin due to its protective and regenerative properties.
Environmental Considerations
Kiwi leaf extract is derived from a renewable resource. The Actinidia chinensis plant is cultivated in various regions, and the extraction from leaves does not have a significant environmental impact, making the extract an eco-friendly choice for cosmetic formulations.
Regulatory Status
Kiwi leaf extract is approved for use in cosmetics by major regulatory authorities, such as the European Union and the FDA in the United States.
Studies
Kiwis contain on average:
- Vitamin C Ascorbic acid in the following measures (Cultivar Actinidia chinenssis Plach, Gaivard): mg/g 5,44 in the juice, 1,14 in the skin, 4,20 in the pulp (1).
- Vitamin E
- Potassium
It has good antioxidant and anti-inflammatory properties due to the presence of ascorbic acid.
Flavonoids, vitamin C and carotenoids have a preventive effect against cardiovascular diseases (2).
Kiwi has proven effective in relieving chronic constipation (3) with these benefits:
- decreased in days of laxative used
- satisfaction of bowel habit
- improvement in transit time
- improvement in rectal sensation
