Oenothera biennis flower extract, commonly known as evening primrose flower extract, is derived from the flowers of the Oenothera biennis plant, which belongs to the Onagraceae family. This extract is utilized in cosmetics and nutraceuticals for its antioxidant, anti-inflammatory, and skin-soothing properties.

Chemical Composition and Structure

Oenothera biennis flower extract contains several key bioactive compounds, including:

Flavonoids: Present in the flowers, flavonoids contribute to the extract's antioxidant and anti-inflammatory properties.
Phenolic acids: The flowers contain phenolic acids that provide antioxidant protection and enhance the extract's benefits for the skin.
Essential oils: The flowers may contain essential oils that contribute to the soothing and calming effects of the extract.
Vitamins: Includes vitamins such as vitamin C, which supports skin health and provides additional antioxidant benefits.
The chemical structure of Oenothera biennis flower extract features a variety of flavonoids, phenolic acids, and essential oils that contribute to its therapeutic properties.

Physical Properties

Oenothera biennis flower extract is typically a light yellow to amber liquid with a subtle floral aroma. It is soluble in oils and organic solvents and may vary in color and consistency depending on the extraction method and concentration.

Production Process

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

Harvesting: Flowers of Oenothera biennis are collected from the plant. The flowers are rich in flavonoids, phenolic acids, and essential oils.

Preparation: The collected flowers are cleaned and prepared for extraction. This involves removing any impurities and preparing the flowers for the extraction process.

Extraction:

Solvent Extraction: The prepared flowers are treated with solvents such as water, alcohol, or vegetable oils to extract the bioactive compounds. This process produces a concentrated extract.
Steam Distillation: Essential oils may be obtained from the flowers through steam distillation, preserving their aromatic and therapeutic properties.
Purification: The extract is purified to remove impurities and obtain a high-quality product. This typically includes 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 enhance 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, protected from light, moisture, and heat, to maintain its stability and effectiveness.

Applications

Medical: Oenothera biennis flower extract can be used in nutraceutical formulations for its antioxidant and anti-inflammatory properties. It may be used in treatments to support overall health and improve skin condition.

Cosmetic: In cosmetics, Oenothera biennis flower extract is valued for its antioxidant, soothing, and skin-supporting properties. It is used in products such as creams, lotions, serums, and masks to improve skin health, reduce inflammation, and calm irritation.

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

Environmental and Safety Considerations

Oenothera biennis flower 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 flowers and the use of appropriate extraction methods help minimize ecological impact compared to wild harvesting, supporting more sustainable production practices.

INCI


Cosmetic astringent. This ingredient exerts a direct effect on the skin by tightening dilated pores by contracting stratum corneum cells and removing superfluous oil.
Synonyms:

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