Ingredient review
Oxacycloheptadec-10-en-2-one
INCI: OXACYCLOHEPTADEC-10-EN-2-ONE
A synthetic musk that adds a warm, floral scent to products; generally considered safe at low concentrations but may cause sensitivity in some individuals.
In plain English
This ingredient is a type of synthetic musk, meaning it's a man-made compound that smells pleasant—often described as sweet, floral, or musky. It's added to products like perfumes, lotions, and cleansers to give them a nice scent. Because it's used in tiny amounts, it rarely causes problems, but people with very sensitive skin might still react to it.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Oxacycloheptadec-10-en-2-one is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Oxacycloheptadec-10-en-2-one.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
Oxacycloheptadec-10-en-2-one is a macrocyclic musk, a class of synthetic fragrance compounds designed to mimic natural musk scents. It is a clear, oily liquid that is stable and long-lasting on skin.
How it works
In a cosmetic product, it functions solely as a fragrance ingredient. It evaporates slowly from the skin, releasing a pleasant scent over time. It does not have any active skincare benefits like moisturizing or anti-aging.
Pros
Pleasant scent profile
Adds a warm, floral-musky aroma that is widely appreciated in perfumery and can enhance the sensory experience of a product.
Good stability
Does not break down quickly in formulations or discolor over time, making it reliable for manufacturers and consistent for users.
Cons and cautions
Potential allergen
Like many fragrance ingredients, it can cause allergic contact dermatitis in a small number of people, especially those with pre-existing fragrance sensitivities.
No skincare benefit
It only provides scent and does not moisturize, protect, or improve skin health, so it may be unnecessary for those focused purely on efficacy.
Best for
- Anyone who enjoys scented skincare and does not have fragrance sensitivities
- People looking for a stable, non-discoloring fragrance option
Use caution if
- Individuals with known fragrance allergies or very sensitive skin
- Those who prefer fragrance-free products
Usage tips
Safety summary
Oxacycloheptadec-10-en-2-one is considered safe for use in cosmetics at typical concentrations. It has low acute toxicity and is not a skin irritant in most people. However, as a fragrance ingredient, it carries a small risk of allergic sensitization, particularly for those with a history of fragrance allergies.
Research notes
Research indicates that macrocyclic musks have low skin penetration and low toxicity. The Cosmetic Ingredient Review (CIR) panel has evaluated similar musks and found them safe at current usage levels. Human repeated insult patch tests show low sensitization rates.
Common label clues
- Typical concentration
- Typically used at very low levels, often below 1% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, with concentration limits recommended by the International Fragrance Association (IFRA).
- Common uses
- Perfumes, Body lotions, Cleansers, Hair products
- Environmental note
- Macrocyclic musks like this one are generally considered more biodegradable than polycyclic musks, though environmental persistence data is still limited.
Good to know
- This ingredient is also known as Ambrettolide and is considered a 'clean' musk alternative by some brands because it does not persist in the environment as long as older synthetic musks.
- It is often used in 'musk' accords to create depth in floral and woody perfumes.
Common questions
What is Oxacycloheptadec-10-en-2-one in beauty products?
This ingredient is a type of synthetic musk, meaning it's a man-made compound that smells pleasant—often described as sweet, floral, or musky. It's added to products like perfumes, lotions, and cleansers to give them a nice scent. Because it's used in tiny amounts, it rarely causes problems, but people with very sensitive skin might still react to it.
What does Oxacycloheptadec-10-en-2-one do in a beauty product?
In a cosmetic product, it functions solely as a fragrance ingredient. It evaporates slowly from the skin, releasing a pleasant scent over time. It does not have any active skincare benefits like moisturizing or anti-aging.
Is Oxacycloheptadec-10-en-2-one safe for most people?
Oxacycloheptadec-10-en-2-one is considered safe for use in cosmetics at typical concentrations. It has low acute toxicity and is not a skin irritant in most people. However, as a fragrance ingredient, it carries a small risk of allergic sensitization, particularly for those with a history of fragrance allergies.
Who should be careful with Oxacycloheptadec-10-en-2-one?
Individuals with known fragrance allergies or very sensitive skin Those who prefer fragrance-free products
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.