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Dioleoylamidoethyl Hydroxyethylmonium Methosulfate: An In-Depth Look at Its Role in Cosmetics

Article last updated: June 13, 2024

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Ever wondered what makes your favorite skincare products so effective? Dive into the world of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate and discover its transformative role in cosmetics, from its creation to its incredible benefits and potential side effects.

What is Dioleoylamidoethyl Hydroxyethylmonium Methosulfate?

Dioleoylamidoethyl Hydroxyethylmonium Methosulfate, also known by its more technical name (2-Hydroxyethyl)methylbis[2-[(1-oxooctadec-9-enyl)amino]ethyl]ammonium methyl sulfate, is a synthetic compound commonly used in the cosmetic industry. This ingredient is primarily derived from oleic acid, a fatty acid that is naturally found in various animal and vegetable fats and oils. Its complex name can be broken down to highlight its key components: “dioleoyl” refers to the two oleic acid chains, “amidoethyl” indicates the presence of an amide group, and “hydroxyethylmonium” points to the hydroxyethyl group attached to a quaternary ammonium ion.

The history of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate in cosmetics dates back to the growing demand for more effective and multifunctional ingredients in personal care products. Initially, the focus was on finding compounds that could serve dual purposes, such as conditioning and cleansing, without causing damage to the hair or skin. This ingredient gained traction due to its ability to act as both an antistatic agent and a cleansing agent, making it a valuable addition to shampoos, conditioners, and other hair care products.

The production of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate involves a series of chemical reactions. It starts with the esterification of oleic acid to form an amide, which is then reacted with ethylene oxide to introduce the hydroxyethyl group. Finally, the compound is quaternized with methyl sulfate to produce the final product. This process ensures that the ingredient is stable, effective, and safe for use in various cosmetic formulations.

The Benefits/Uses of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate

In this section, we will delve into the officially recognized cosmetic benefits and uses of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate:


One of the primary benefits of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate is its antistatic property. In simpler terms, this means it helps to reduce or eliminate static electricity. If you’ve ever experienced your hair standing on end or clinging to your clothes, you know how annoying static can be. This ingredient works by neutralizing the electrical charges that cause static, making your hair smoother and easier to manage. So, if you’re using a product with this ingredient, you can expect less frizz and flyaways, leading to a more polished and sleek appearance.


Another significant benefit of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate is its cleansing ability. This ingredient helps to remove dirt, oil, and impurities from the skin and hair. It works by breaking down and emulsifying these unwanted substances, making them easier to wash away. This means that products containing this ingredient can help you achieve a cleaner, fresher feel, whether you’re using a shampoo, conditioner, or facial cleanser. It’s particularly useful in formulations aimed at providing a deep clean without overly stripping the skin or hair of its natural oils.

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).

Potential Side Effects & Other Considerations

Dioleoylamidoethyl Hydroxyethylmonium Methosulfate is generally considered safe for use in cosmetic products. However, as with any ingredient, there are potential side effects and considerations to keep in mind.

  • Skin irritation: Some individuals may experience mild irritation, especially if they have sensitive skin.
  • Allergic reactions: Although rare, allergic reactions such as redness, itching, or swelling can occur.
  • Dryness: In some cases, the ingredient may cause dryness or exacerbate existing dry skin conditions.

Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate during pregnancy are lacking. Therefore, it is recommended that they consult a healthcare professional for further advice.

Adverse reactions to this ingredient are uncommon, but it is always wise to perform a patch test before widespread usage to ensure there are no adverse effects.

The comedogenicity of Dioleoylamidoethyl Hydroxyethylmonium Methosulfate is rated at 1 on a scale of 0 to 5, where 0 is totally non-comedogenic and 5 is highly comedogenic. This low rating means it is unlikely to clog pores, making it a suitable option for individuals prone to acne, blemishes, or breakouts.

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