Rosa Rubiginosa Seed Oil PEG-8 Esters is a derivative of Rosa rubiginosa seed oil, chemically modified to enhance its functionality and performance in cosmetic formulations. This esterified form combines the beneficial properties of Rosa rubiginosa seed oil with PEG-8 to create a multifunctional ingredient widely used in the cosmetic and personal care industry for its emulsifying, skin-conditioning, and moisturizing properties.

Chemical Composition and Structure
Rosa Rubiginosa Seed Oil PEG-8 Esters is created by esterifying Rosa rubiginosa seed oil with polyethylene glycol (PEG-8). This process enhances the oil's solubility and stability, making it more effective in various formulations. The specific composition includes:

Essential Fatty Acids: Including linoleic acid (omega-6) and alpha-linolenic acid (omega-3) from the original Rosa rubiginosa seed oil, which help maintain skin barrier function and hydration.
PEG-8: A polyethylene glycol compound that enhances the emulsifying and moisturizing properties of the ester.
Vitamins and Antioxidants: Including vitamins A, C, and E, which provide antioxidant protection and skin conditioning benefits.
Physical Properties
Rosa Rubiginosa Seed Oil PEG-8 Esters typically appears as a light to medium yellow liquid. It is more soluble in water compared to the unmodified oil, making it easier to incorporate into various cosmetic formulations.

Cosmetic and Personal Care Applications
Emulsifying Agent: The ester acts as an effective emulsifier, helping to stabilize and improve the texture of creams and lotions.

Moisturizing: The combination of essential fatty acids and PEG-8 provides enhanced moisturizing properties, helping to keep the skin hydrated.

Skin Conditioning: The esters improve skin texture and elasticity, contributing to a smoother and healthier appearance.

Antioxidant Protection: The presence of vitamins A, C, and E helps protect the skin from environmental stressors and free radical damage.

Anti-Aging: The regenerative and antioxidant properties help reduce the appearance of fine lines and wrinkles, promoting a youthful complexion.

Enhanced Stability: Esterification improves the stability of the oil, making it more resistant to oxidation and degradation.

Environmental and Safety Considerations

Rosa Rubiginosa Seed Oil PEG-8 Esters is generally considered safe for use in cosmetic and personal care products. It is well-tolerated by most skin types, including sensitive skin. The production process is environmentally friendly, utilizing sustainable practices. However, as with all new ingredients, it should be patch-tested before use, especially for those with sensitive skin.

Cosmetics - INCI Functions


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.
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