Description

Rosa Wichuraiana Stem Extract is derived from the stem of Rosa wichuraiana, a species of wild rose native to East Asia. Known for its hardy growth and aesthetic appeal, Rosa wichuraiana is commonly used in ornamental gardening. The stem extract is prized in cosmetic and skincare formulations for its potential anti-aging, antioxidant, and skin-soothing properties.

Chemical Composition and Structure:
The extract contains a variety of bioactive compounds, which include:

Flavonoids: These polyphenolic compounds, such as quercetin and kaempferol, are known for their antioxidant and anti-inflammatory properties.
Phenolic Acids: Including caffeic acid and ferulic acid, which contribute to the extract's antioxidant capabilities and protect the skin from oxidative stress.
Triterpenoids: Such as ursolic acid and oleanolic acid, known for their anti-inflammatory and antioxidant effects.
Saponins: These compounds may offer anti-inflammatory and skin-conditioning benefits.
Vitamins and Amino Acids: Essential for maintaining healthy skin, including vitamins A, C, and E, as well as various amino acids that support skin hydration and repair.

These compounds typically feature aromatic rings for flavonoids and phenolic acids, and cyclic structures for triterpenoids and saponins.

Physical Properties:

Appearance: The extract is usually a dark brown to reddish-brown liquid or a powder, depending on the concentration and formulation.
Odor: It may have a mild, natural floral or herbal scent.
Solubility: Soluble in water and alcohol-based solvents, but generally insoluble in oils.

Production Process:

Harvesting: Stems of Rosa wichuraiana are collected when the plant is in its optimal growth stage.
Extraction: The stems are processed to extract bioactive compounds. Extraction methods may include maceration in solvents like ethanol or water, or advanced techniques such as ultrasonic extraction or supercritical fluid extraction.
Purification: The extract is purified to remove impurities and concentrate active ingredients. This often involves filtration and concentration processes.
Formulation: The purified extract is incorporated into various cosmetic formulations or skin treatments, such as serums, creams, and masks.

Applications:

Cosmetics: Used in facial creams, serums, and masks for its antioxidant, anti-inflammatory, and skin-conditioning properties.
Skincare: Beneficial for reducing signs of aging, soothing irritated skin, and improving overall skin health.
Dermatological Treatments: May be included in formulations designed to treat inflammation and support skin repair.

Environmental and Safety Considerations:

Environmental Impact: The use of Rosa wichuraiana for stem extract production is generally considered sustainable if the plant is cultivated responsibly and harvesting methods do not harm the environment.
Safety: Rosa Wichuraiana Stem Extract is typically safe for topical use. This ingredient is generally regarded as safe for use in cosmetics and personal care products when used as directed. Individuals with allergies to Rosaceae family plants should be cautious.

INCI:
Antioxidant agent. Ingredient that counteracts oxidative stress and prevents cell damage. Free radicals, pathological inflammatory processes, reactive nitrogen species and reactive oxygen species are responsible for the ageing process and many diseases caused by oxidation.

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

Skin conditioning agent - Emollient. Emollients have the characteristic of enhancing the skin barrier through a source of exogenous lipids that adhere to the skin, improving barrier properties by filling gaps in intercorneocyte clusters to improve hydration while protecting against inflammation. In practice, they have the ability to create a barrier that prevents transepidermal water loss. Emollients are described as degreasing or refreshing additives that improve the lipid content of the upper layers of the skin by preventing degreasing and drying of the skin. The problem with emollients is that many have a strong lipophilic character and are identified as occlusive ingredients; they are oily and fatty materials that remain on the skin surface and reduce transepidermal water loss. In cosmetics, emollients and moisturisers are often considered synonymous with humectants and occlusives.

Hair conditioning agent. A significant number of ingredients with specific and targeted purposes may co-exist in hair shampoo formulations: cleansers, conditioners, thickeners, matting agents, sequestering agents, fragrances, preservatives, special additives. However, the indispensable ingredients are the cleansers and conditioners as they are necessary and sufficient for hair cleansing and manageability. The others act as commercial and non-essential auxiliaries such as: appearance, fragrance, colouring, etc. Hair conditioning agents have the task of increasing shine, manageability and volume, and reducing static electricity, especially after treatments such as colouring, ironing, waving, drying and brushing. They are, in practice, dispersants that may contain cationic surfactants, thickeners, emollients, polymers. The typology of hair conditioning agents includes: intensive conditioners, instant conditioners, thickening conditioners, drying conditioners. They can perform their task generally accompanied by other different ingredients.
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