Dimethylbicycloheptyl Ethanone: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 27, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Dimethylbicycloheptyl Ethanone?

Dimethylbicycloheptyl Ethanone is an organic compound first created by fragrance chemists exploring new ways to deliver a clean lingering scent in personal care products. Structurally it belongs to a family of bicyclic molecules that carry two methyl groups and a ketone (ethanone) group, a setup that helps the ingredient evaporate slowly so its aroma lasts on skin. Most commercial supplies are synthesized in the lab through a multi-step process that starts with simple petroleum-derived building blocks, which are combined, cyclized and carefully purified to meet cosmetic grade standards. Because it is lab made there is no reliance on plant or animal sources, making it a consistent vegan friendly option for formulators.

The compound entered the cosmetic scene in the late 1990s when manufacturers looked for deodorant actives that could mask body odor without the heavy powdery notes of older fragrance materials. Its pleasant woody fresh character caught on quickly and today it shows up in roll-on and stick deodorants, body sprays, scented lotions, hair styling products, bar soaps and even some sheet masks that aim to provide an all-over fresh feeling.

Dimethylbicycloheptyl Ethanone’s Cosmetic Benefits/Uses

In topical products Dimethylbicycloheptyl Ethanone serves a single but important role that enhances the user’s sensory experience.

As a deodorant ingredient it helps neutralize or mask unwanted body odors, leaving skin smelling clean for longer periods. Its slow-release scent profile means formulators can achieve lasting freshness with lower perfume loads, which can reduce potential fragrance irritation in sensitive users.

Who Can Use Dimethylbicycloheptyl Ethanone

Because Dimethylbicycloheptyl Ethanone is a lightweight aroma molecule rather than an oily emollient or active acid, it is generally considered suitable for normal, dry, combination and oily skin. Those with very reactive or fragrance-sensitive skin should proceed with caution as any scented material can trigger redness or stinging in that subset.

The compound is produced entirely through laboratory synthesis with no animal-derived substrates or by-products, so it fits vegan and vegetarian lifestyles.

No human or animal studies have flagged special risks for women who are pregnant or breastfeeding when the ingredient is used at the low levels found in cosmetics. However there is limited published data, so this information is not medical advice. Expectant or nursing mothers should show any product containing Dimethylbicycloheptyl Ethanone to their physician to ensure it aligns with their personal health needs.

The molecule is not a photosensitizer, meaning it does not heighten skin’s sensitivity to the sun. It is also non-comedogenic and unlikely to interfere with common actives like aluminum salts in antiperspirants.

Potential Side Effects/Adverse Reactions

Reactions to topical Dimethylbicycloheptyl Ethanone vary from person to person. The points below outline potential side effects yet they remain uncommon when the ingredient is used at normal cosmetic concentrations.

  • Mild local irritation such as redness or stinging on very sensitive skin
  • Allergic contact dermatitis presenting as an itchy rash or small bumps
  • Eye irritation if the product accidentally gets into the eyes
  • Headache or nausea in individuals highly sensitive to fragrances when inhaling concentrated vapors

If any of these reactions occur stop using the product and seek advice from a healthcare professional.

Comedogenic Rating

Rating: 0 (non-comedogenic)

Dimethylbicycloheptyl Ethanone is a small volatile fragrance molecule that evaporates rather than lingering in pores. It contains no heavy oils, waxes or fatty acids that could clog follicles so it earns the lowest score on the comedogenic scale. Because of this it is generally fine for people who are prone to acne or breakouts.

The ingredient also lacks occlusive properties and is used at very low concentrations, further reducing any chance of pore blockage.

Summary

Dimethylbicycloheptyl Ethanone is used in cosmetics as a deodorant fragrance active that masks body odor while providing a clean woody freshness. Its compact bicyclic structure lets it release scent slowly which keeps products smelling pleasant for longer without needing heavy perfume loads.

While not as famous as big name aroma chemicals like limonene or linalool it has carved out a quiet niche in modern deodorants, body sprays and fresh scented skin care thanks to its vegan friendly lab synthesis and low irritancy profile.

Current safety data show it to be low risk for most users when applied at cosmetic levels though very sensitive skin may still react to any fragrance. As with any new product it is smart to do a quick patch test before full use to be sure your skin agrees with the formula.

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