Article last updated: October 15, 2024
Undeceth-5, also known by its chemical name Poly(oxy-1,2-ethanediyl), .alpha.-(undecyl)-.omega.-hydroxy- (5 mol EO average molar ratio), is a synthetic compound widely used in the cosmetic industry. This ingredient is part of the ethoxylated alcohol family, where “Undeceth” refers to the undecyl (C11) alcohol base, and the “5” indicates the average number of ethylene oxide units attached to it. You might also see it referred to as PEG-5 Undecyl Ether in some ingredient lists.
The history of Undeceth-5 in cosmetics dates back to the growing demand for more effective and versatile cleansing and emulsifying agents. As the beauty and personal care industry evolved, there was a need for ingredients that could improve the texture, stability, and performance of products. Undeceth-5 emerged as a reliable solution due to its ability to blend oil and water-based components seamlessly, making it a staple in many formulations.
The production of Undeceth-5 involves a chemical process known as ethoxylation. This process starts with undecyl alcohol, which is derived from natural or synthetic sources. The alcohol undergoes a reaction with ethylene oxide, resulting in the addition of ethylene oxide units to the alcohol molecule. The “5” in Undeceth-5 signifies that, on average, five ethylene oxide units are added to each molecule of undecyl alcohol. This process not only enhances the solubility of the alcohol in water but also imparts the cleansing and emulsifying properties that make Undeceth-5 so valuable in cosmetic formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Undeceth-5:
Undeceth-5 is primarily known for its cleansing properties. This means it helps to remove dirt, oil, and other impurities from the skin and hair. When included in products like shampoos, facial cleansers, and body washes, Undeceth-5 works by breaking down and emulsifying the oils and grime, making it easier to rinse them away. This leaves your skin and hair feeling clean and refreshed without stripping away essential moisture.
Another key benefit of Undeceth-5 is its ability to act as an emulsifier. In simple terms, this means it helps to mix ingredients that typically don’t blend well together, like oil and water. This property is crucial in the formulation of creams, lotions, and other cosmetic products, ensuring a smooth and consistent texture. By keeping the ingredients well-mixed, Undeceth-5 helps to enhance the stability and effectiveness of the product, providing a better user experience.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Undeceth-5 is generally considered safe for use in cosmetic products. However, as with any ingredient, there are potential side effects and considerations to be aware of:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Undeceth-5 during pregnancy and breastfeeding are lacking. It is advisable to consult a healthcare professional for further advice.
Side effects and adverse reactions from Undeceth-5 are generally uncommon. However, it is recommended to perform a patch test before widespread usage to ensure there is no adverse reaction.
Undeceth-5 has a comedogenicity rating of 1, meaning it is considered to be low on the scale of pore-clogging potential. This makes it a relatively safe option for individuals prone to acne, blemishes, or breakouts.
