Polyglyceryl-3 Palmitate/Stearate is a cosmetic ingredient primarily used as an emulsifier and skin conditioner. It is the monoester formed by the reaction of polyglycerin-3 with a mixture of palmitic acid and stearic acid. This ingredient is valued for its ability to improve the texture and stability of cosmetic formulations, as well as providing moisturizing and skin-softening benefits.

Chemical Composition and Structure

This compound combines the hydrating and emollient properties of polyglycerin-3 with the long-chain fatty acids, palmitic and stearic acids. These fatty acids are known for their moisturizing properties and their ability to form a barrier on the skin that helps to prevent moisture loss. The monoester formation results in a molecule that can effectively stabilize oil-in-water and water-in-oil emulsions, making it highly effective in various cosmetic products.

Physical Properties

Polyglyceryl-3 Palmitate/Stearate typically appears as a waxy solid at room temperature. It is soluble in oils and has limited solubility in water, making it ideal for oil-based cosmetic formulations such as creams, lotions, and balms.

Production Process

Synthesis: The esterification process involves reacting polyglycerin-3 with a mixture of palmitic and stearic acids. This reaction typically requires a catalyst and is conducted under controlled temperature conditions to ensure efficient ester bond formation.
Purification: Following synthesis, the product is purified to remove any unreacted acids and by-products. This step might involve techniques such as distillation or filtration.
Quality Control: The final product undergoes rigorous testing to ensure its purity, efficacy, and suitability for cosmetic use. Tests include checking for consistency, melting point, and emulsion stability.

Applications

Cosmetic Products: Used in creams, lotions, and other skincare products, where it serves as an emulsifier to help blend oil and water components effectively, enhancing product consistency and skin feel.
Skin Care: Its emollient properties make it particularly valuable in moisturizers and products designed for dry or sensitive skin, where it helps to lock in moisture and protect the skin's natural barrier.
Hair Care: Also used in hair conditioners and treatments, where it contributes to improved hair texture and manageability.

Environmental and Safety Considerations

Polyglyceryl-3 Palmitate/Stearate is considered safe for use in cosmetic products and is generally well-tolerated by the skin. It is derived from renewable resources, making it an environmentally friendly choice. It is biodegradable and non-toxic, ensuring minimal environmental impact and safety for users. As with all cosmetic ingredients, recommended usage levels should be adhered to, to ensure safety and avoid potential sensitivities.

INCI


Surfactant - Emulsifying agent. Emulsions are thermodynamically unstable and are used to soothe or soften the skin and emulsify, so they need a specific, stabilising ingredient. This ingredient forms a film, lowers the surface tension and makes two immiscible liquids miscible. A very important factor affecting the stability of the emulsion is the amount of the emulsifying agent. Emulsifiers have the property of reducing the oil/water or water/oil interfacial tension, improving the stability of the emulsion and also directly influencing the stability, sensory properties and surface tension of sunscreens by modulating the filmometric performance.
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