Ingredient review
Methyl Isopropyl Bicyclooctene Carboxylate
INCI: METHYL ISOPROPYL-METHYLBICYCLOOCTENE-2-CARBOXYLATE
A synthetic fragrance compound that adds a fresh, woody scent but offers no skincare benefits and may cause irritation in sensitive individuals.
In plain English
This is a man-made chemical that gives products a pleasant, fresh, woody smell. It is used in tiny amounts to make lotions, cleansers, and perfumes smell nice. It does not moisturize, treat, or improve your skin in any way—it is purely for scent.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- synthetic
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Methyl Isopropyl Bicyclooctene Carboxylate 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 Methyl Isopropyl Bicyclooctene Carboxylate.
- 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
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A synthetic ester compound specifically designed to impart a fresh, woody, and slightly citrusy fragrance to cosmetic and personal care products. It is not a natural extract but a lab-created molecule.
How it works
It works by evaporating from the skin's surface, releasing scent molecules that are detected by your nose. It does not interact with the skin's biology or provide any functional benefit beyond fragrance.
Pros
Pleasant scent
Adds a fresh, woody aroma that many people find appealing, improving the overall user experience of a product.
Low concentration
Used in very small amounts, which reduces the likelihood of irritation for most people without fragrance sensitivities.
Cons and cautions
No skin benefit
This ingredient does not moisturize, soothe, or protect the skin. It is purely for scent and adds no functional value to a skincare routine.
Potential irritant
As a synthetic fragrance, it can cause redness, itching, or allergic reactions in people with sensitive skin or fragrance allergies.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those looking for a fresh, woody fragrance note in their routine
Use caution if
- Individuals with sensitive, reactive, or eczema-prone skin
- Anyone with a known fragrance allergy or contact dermatitis
Usage tips
Safety summary
Generally recognized as safe for use in cosmetics at low concentrations. However, it can cause skin irritation or allergic reactions in sensitive individuals. The Cosmetic Ingredient Review (CIR) has not published a specific safety assessment for this compound, but similar fragrance esters are considered safe when used as intended.
Research notes
There is limited published research specifically on this ingredient. It is a fragrance compound with no known therapeutic benefits. Safety data is largely extrapolated from studies on similar ester fragrance ingredients, which show low acute toxicity and low skin irritation potential at typical use levels.
Common label clues
- Typical concentration
- Typically used at very low concentrations (under 1%) in rinse-off and leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and other major markets, but must be listed on the ingredient label when present. No specific concentration limits are set, but good manufacturing practices recommend low usage levels.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, its environmental persistence and biodegradability are not well-documented. Natural fragrance alternatives may have a lower environmental footprint.
Good to know
- This ingredient is often listed near the end of an ingredient list, indicating it is used in very low concentrations.
- Fragrance ingredients like this one are not required to be individually disclosed on labels in all regions, so it may appear simply as 'fragrance' or 'parfum'.
Common questions
What is Methyl Isopropyl Bicyclooctene Carboxylate in beauty products?
This is a man-made chemical that gives products a pleasant, fresh, woody smell. It is used in tiny amounts to make lotions, cleansers, and perfumes smell nice. It does not moisturize, treat, or improve your skin in any way—it is purely for scent.
What does Methyl Isopropyl Bicyclooctene Carboxylate do in a beauty product?
It works by evaporating from the skin's surface, releasing scent molecules that are detected by your nose. It does not interact with the skin's biology or provide any functional benefit beyond fragrance.
Is Methyl Isopropyl Bicyclooctene Carboxylate safe for most people?
Generally recognized as safe for use in cosmetics at low concentrations. However, it can cause skin irritation or allergic reactions in sensitive individuals. The Cosmetic Ingredient Review (CIR) has not published a specific safety assessment for this compound, but similar fragrance esters are considered safe when used as intended.
Who should be careful with Methyl Isopropyl Bicyclooctene Carboxylate?
Individuals with sensitive, reactive, or eczema-prone skin Anyone with a known fragrance allergy or contact dermatitis
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.