Ingredient review
Isopropylbicyclooctenyl Methyl Ketone
INCI: ISOPROPYLBICYCLOOCTENYL METHYL KETONE
A widely used synthetic fragrance that adds a warm, woody scent; generally safe but may cause sensitivity in some individuals.
In plain English
This is a man-made ingredient that gives products a pleasant woody, amber-like smell. It's very common in perfumes and scented skincare. While most people tolerate it well, a small number may experience skin irritation or allergic reactions, especially if they have sensitive skin or a fragrance allergy.
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
Isopropylbicyclooctenyl Methyl Ketone 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 Isopropylbicyclooctenyl Methyl Ketone.
- 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
A synthetic organic compound belonging to the ketone family, specifically designed to mimic the scent of natural woody and amber notes. It is a key component in many fragrance formulations.
How it works
It functions solely as a fragrance ingredient, providing a long-lasting, warm, and slightly sweet scent. It does not have any active skincare benefits like moisturizing or exfoliating.
Pros
Pleasant scent profile
Provides a warm, woody, and slightly amber-like fragrance that is widely appreciated and versatile in many product types.
Low irritation potential for most
At typical use levels, it is considered safe and non-irritating for the majority of users, with a low risk of causing breakouts.
Cons and cautions
Potential allergen
As a synthetic fragrance, it can be a contact allergen for a small subset of people, leading to redness, itching, or dermatitis.
No skincare benefit
It serves only as a scent and does not contribute to the health or appearance of the skin, unlike active ingredients like hyaluronic acid or niacinamide.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those looking for a long-lasting, warm scent in their products
Use caution if
- Individuals with known fragrance allergies or sensitive, reactive skin
Usage tips
Safety summary
Generally recognized as safe for use in cosmetics at typical concentrations. However, it is a known potential allergen, and individuals with fragrance sensitivities should exercise caution.
Research notes
Studies confirm its role as a contact allergen in some individuals, but the overall incidence of reaction is low. It is not considered a carcinogen or endocrine disruptor based on current data.
Common label clues
- Typical concentration
- Typically used at 0.1% to 2% in leave-on products, lower in rinse-off products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, subject to concentration limits to minimize sensitization risk.
- Common uses
- Perfumes, Body lotions, Facial moisturizers, Hair products
- Environmental note
- As a synthetic compound, it is not biodegradable and may accumulate in the environment, though its impact is considered low at typical usage levels.
Good to know
- This ingredient is also known as Iso E Super in the fragrance industry and is a staple in many modern perfumes.
- It is often used in very small amounts, so it may appear low on an ingredient list.
Common questions
What is Isopropylbicyclooctenyl Methyl Ketone in beauty products?
This is a man-made ingredient that gives products a pleasant woody, amber-like smell. It's very common in perfumes and scented skincare. While most people tolerate it well, a small number may experience skin irritation or allergic reactions, especially if they have sensitive skin or a fragrance allergy.
What does Isopropylbicyclooctenyl Methyl Ketone do in a beauty product?
It functions solely as a fragrance ingredient, providing a long-lasting, warm, and slightly sweet scent. It does not have any active skincare benefits like moisturizing or exfoliating.
Is Isopropylbicyclooctenyl Methyl Ketone safe for most people?
Generally recognized as safe for use in cosmetics at typical concentrations. However, it is a known potential allergen, and individuals with fragrance sensitivities should exercise caution.
Who should be careful with Isopropylbicyclooctenyl Methyl Ketone?
Individuals with known fragrance allergies or sensitive, reactive skin
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.