Description

Oenothera biennis leaf extract, also known as evening primrose leaf extract, is derived from the leaves of the Oenothera biennis plant, which belongs to the Onagraceae family. This extract is valued for its antioxidant and anti-inflammatory properties and is commonly used in cosmetic and nutraceutical products.

Chemical Composition and Structure

Oenothera biennis leaf extract contains various bioactive compounds, including:

Flavonoids: Present in the leaves, flavonoids contribute to the extract's antioxidant and anti-inflammatory properties.
Phenolic acids: The leaves contain phenolic acids that provide antioxidant protection and enhance the extract's skin benefits.
Other compounds: May include various terpenes and sterols that add to the beneficial effects of the extract.
The chemical structure of Oenothera biennis leaf extract is characterized by a range of flavonoids and phenolic acids that contribute to its health benefits.

Physical Properties

Oenothera biennis leaf extract is typically a greenish liquid, which may vary in shade from light to dark depending on the extraction method and concentration. It generally has a mild, vegetal aroma and is soluble in organic solvents.

Production Process

The production process for Oenothera biennis leaf extract involves several steps:

Harvesting: Leaves of Oenothera biennis are collected from the plant. These leaves are rich in flavonoids and other bioactive compounds.

Preparation: The collected leaves are cleaned and prepared for extraction, which involves removing impurities and preparing the material for treatment.

Extraction:

Solvent Extraction: The prepared leaves are treated with solvents such as water, alcohol, or vegetable oils to extract the bioactive compounds. This process results in a concentrated extract.
Cold Extraction: An alternative method that may be used to preserve the natural compounds during extraction.
Purification: The extract is purified to remove impurities and obtain a high-quality product. This typically involves filtration and concentration.

Formulation: The purified extract is incorporated into various cosmetic and nutraceutical formulations, such as creams, lotions, serums, and supplements. It is blended with other ingredients to maximize its benefits.

Quality Control: The final product undergoes rigorous quality control testing to ensure it meets safety, efficacy, and performance standards. This includes checks for purity, stability, and compatibility with other ingredients.

Storage: The extract is stored in airtight containers, away from light, moisture, and heat, to maintain its stability and effectiveness.

Applications

Medical: Oenothera biennis leaf extract can be used in nutraceutical formulations for its antioxidant and anti-inflammatory properties. It may be included in treatments to enhance overall well-being and support skin health.

Cosmetic: In cosmetics, Oenothera biennis leaf extract is valued for its antioxidant and skin-supporting properties. It is used in products such as creams, lotions, serums, and masks to improve skin health and protect against environmental damage.

Other: The extract may also be included in other personal care products and additional therapeutic applications.

Environmental and Safety Considerations

Oenothera biennis leaf extract is generally considered safe for use in cosmetics and nutraceuticals when used according to recommended guidelines. It is a natural ingredient with a low risk of irritation or allergic reactions. Environmentally, sustainable harvesting of leaves and appropriate extraction methods help reduce ecological impact compared to wild harvesting, supporting more sustainable production practices.

INCI


Skin conditioning agent. It is the mainstay of topical skin treatment as it has the function of restoring, increasing or improving skin tolerance to external factors, including melanocyte tolerance. The most important function of the conditioning agent is to prevent skin dehydration, but the subject is rather complex and involves emollients and humectants that can be added in the formulation.
Synonyms:

CAS: 90028-66-3 EC number 289-859-2