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Trans-Trimethylundecadienol: An In-Depth Look at Its Role in Cosmetics

Article last updated: June 13, 2024

Table of Contents
Ever wondered what makes your favorite skincare products so effective? Dive into the fascinating world of Trans-Trimethylundecadienol and discover its transformative benefits, production secrets, and essential safety tips in our comprehensive guide.

What is Trans-Trimethylundecadienol?

Trans-Trimethylundecadienol, also known by its chemical name (E)-2,6,10-Trimethylundeca-5,9-dienol, is a specialized ingredient primarily used in the cosmetic industry for its perfuming properties. This compound is a type of alcohol, characterized by its unique molecular structure that includes multiple methyl groups and double bonds, which contribute to its distinctive scent profile.

The history of Trans-Trimethylundecadienol in cosmetics dates back to the ongoing quest for unique and long-lasting fragrances. As the beauty industry evolved, chemists and perfumers sought out new compounds that could offer novel aromatic experiences. Trans-Trimethylundecadienol emerged as a valuable ingredient due to its ability to impart a fresh, complex scent that can enhance the overall fragrance profile of a product.

The production of Trans-Trimethylundecadienol typically involves synthetic organic chemistry techniques. It is often synthesized through a series of chemical reactions that start with simpler organic molecules. These reactions are carefully controlled to ensure the correct arrangement of atoms and the formation of the desired double bonds and methyl groups. The result is a high-purity compound that can be used safely and effectively in various cosmetic formulations.

The Benefits/Uses of Trans-Trimethylundecadienol

In this section, we will delve into the officially recognized cosmetic benefits and uses of Trans-Trimethylundecadienol:


Trans-Trimethylundecadienol is primarily used in cosmetics for its perfuming properties. This means that it is added to products to impart a pleasant fragrance. Whether it’s a lotion, cream, or shampoo, the inclusion of this ingredient helps to enhance the overall sensory experience by providing a delightful scent. This can make the product more enjoyable to use and can also contribute to a feeling of freshness and cleanliness.

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

Trans-Trimethylundecadienol is generally considered safe for use in cosmetic products, primarily serving as a perfuming agent. However, as with any ingredient, there are potential side effects and considerations to keep in mind.

  • Skin irritation
  • Allergic reactions
  • Contact dermatitis

Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Trans-Trimethylundecadienol during pregnancy or breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.

Adverse reactions to Trans-Trimethylundecadienol are relatively uncommon, but it is always prudent to conduct a patch test before widespread use to ensure you do not have a sensitivity or allergy to the ingredient.

In terms of comedogenicity, Trans-Trimethylundecadienol has a rating of 1 on a scale of 0 (totally non-comedogenic) to 5 (highly comedogenic). This low rating indicates that it is unlikely to clog pores, making it generally suitable for people prone to acne, blemishes, or breakouts.

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