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Octahydro-Tetramethylcyclopropazulene: 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 fascinating world of Octahydro-Tetramethylcyclopropazulene and discover its transformative role in cosmetics, from its unique formulation to its incredible benefits and potential side effects.

What Is Octahydro-Tetramethylcyclopropazulene?

Octahydro-Tetramethylcyclopropazulene, also known by its more complex chemical name (1aR-(1aa,4a,4ab,7ba))-1a,2,3,4,4a,5,6,7b-Octahydro-1,1,4,7-tetramethyl-1H-cycloprop(E)azulene, is a synthetic compound primarily used in the cosmetic industry for its perfuming properties. This ingredient is often derived from a series of chemical reactions involving azulene, a naturally occurring hydrocarbon found in some essential oils, such as chamomile and guaiac wood oil.

The history of Octahydro-Tetramethylcyclopropazulene in cosmetics dates back to the mid-20th century when chemists began to explore synthetic alternatives to natural fragrance ingredients. The goal was to create more stable and consistent compounds that could be used in a variety of cosmetic formulations. Over time, Octahydro-Tetramethylcyclopropazulene emerged as a popular choice due to its unique scent profile and stability.

The production of Octahydro-Tetramethylcyclopropazulene involves a multi-step chemical synthesis process. Initially, azulene undergoes hydrogenation to form a more saturated structure. Following this, specific methyl groups are added through a series of controlled reactions, resulting in the final compound. This synthetic approach allows for the production of a high-purity ingredient that can be reliably used in various cosmetic products.

The Benefits/Uses of Octahydro-Tetramethylcyclopropazulene

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


One of the primary benefits of Octahydro-Tetramethylcyclopropazulene is its perfuming capability. This ingredient is used in cosmetics to impart a pleasant fragrance to the product. When you apply a cosmetic product containing this ingredient, it helps to mask any unpleasant odors that might be present from other ingredients, making the overall experience more enjoyable. This can be particularly beneficial in products like lotions, creams, and hair care items where a pleasant scent can enhance the user’s 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).

Potential Side Effects & Other Considerations

Octahydro-Tetramethylcyclopropazulene is generally considered safe for use in cosmetic products, with a low allergenic potential. However, as with any ingredient, there are potential side effects that users should be aware of:

  • Skin irritation
  • Redness
  • Itching
  • Contact dermatitis

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

Side effects and adverse reactions from Octahydro-Tetramethylcyclopropazulene are relatively uncommon. However, it is recommended to conduct a patch test before widespread usage to ensure there is no adverse reaction.

In terms of comedogenicity, Octahydro-Tetramethylcyclopropazulene is rated as a 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 and is generally suitable for people prone to acne, blemishes, or breakouts.

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