Article last updated: October 15, 2024
Undeceth-9, also known by its chemical name Poly(oxy-1,2-ethanediyl), .alpha.-hydroxy-.omega.-(undecyloxy)- (9 mol EO average molar ratio), is a versatile ingredient commonly found in a variety of cosmetic products. This ingredient is part of the larger family of ethoxylated alcohols, which are compounds formed by the reaction of fatty alcohols with ethylene oxide. In the case of Undeceth-9, the fatty alcohol is derived from undecyl alcohol, a substance that can be sourced from natural fats and oils or synthesized in a lab.
The history of Undeceth-9 in cosmetics dates back to the mid-20th century when the demand for more effective and multifunctional ingredients began to rise. Researchers discovered that by ethoxylating fatty alcohols, they could create compounds with enhanced properties, such as improved solubility and emulsifying capabilities. This led to the development and incorporation of Undeceth-9 into various skincare and haircare formulations.
The production of Undeceth-9 involves a chemical process known as ethoxylation. This process starts with undecyl alcohol, which is then reacted with ethylene oxide. The reaction typically occurs under controlled conditions, allowing for the precise addition of ethylene oxide molecules. For Undeceth-9, an average of nine ethylene oxide units are added to each molecule of undecyl alcohol. This results in a compound that is both hydrophilic (water-attracting) and lipophilic (oil-attracting), making it an excellent emulsifier and surfactant.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Undeceth-9:
Undeceth-9 is known for its skin conditioning properties. This means it helps to maintain the skin in good condition by improving its appearance and texture. When applied in cosmetic formulations, it can make your skin feel softer, smoother, and more supple. This is particularly beneficial for those with dry or rough skin, as it helps to restore a healthy, hydrated look and feel.
As an emollient, Undeceth-9 works to soften and soothe the skin. Emollients are crucial in skincare products because they form a protective barrier on the skin’s surface, which helps to lock in moisture. This can prevent dryness and flakiness, making your skin feel more comfortable and less irritated. It’s a great ingredient for anyone looking to keep their skin moisturized and healthy.
Undeceth-9 also has cleansing properties. This means it can help to remove dirt, oil, and other impurities from the skin. In cleansers and shampoos, it works by breaking down and emulsifying these unwanted substances, allowing them to be rinsed away easily. This makes it an effective ingredient for maintaining clean and clear skin, free from the buildup that can lead to clogged pores and breakouts.
Lastly, Undeceth-9 acts as an emulsifying agent. Emulsifiers are essential in cosmetic formulations because they help to blend water and oil-based ingredients, which would otherwise separate. This ensures that products like lotions, creams, and serums have a smooth and consistent texture, making them easier to apply and more effective in delivering their benefits to the skin.
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-9 is generally considered safe for use in cosmetic products, but like any ingredient, it may cause side effects in some individuals. Here are some potential side effects of topical application:
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Undeceth-9 during pregnancy are lacking. Therefore, it is advisable for pregnant or breastfeeding women to consult a healthcare professional for further advice before using products containing this ingredient.
Side effects and adverse reactions from Undeceth-9 are generally uncommon. However, it is always a good practice to conduct a patch test before widespread usage to ensure that you do not have an adverse reaction to the ingredient.
Undeceth-9 has a comedogenic rating of 1, which means it is considered to be very low on the scale of pore-clogging potential. This makes it a suitable option for individuals who are prone to acne, blemishes, or breakouts, as it is unlikely to contribute to these skin issues.
