Ingredient review
Isopropyl Methyl Bicyclooctene Carbaldehyde
INCI: ISOPROPYL-METHYL-BICYCLOOCTENE-2-CARBALDEHYDE
A widely used synthetic fragrance that adds a warm, woody scent but offers no skincare benefits and may cause sensitivity in some people.
In plain English
This is a lab-made ingredient that smells like a mix of cedarwood and amber. It's added to many beauty products to give them a pleasant, sophisticated scent. It doesn't moisturize, exfoliate, or treat any skin concerns—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with very sensitive skin or fragrance allergies.
Quick decision guide
Useful, but context matters
Isopropyl Methyl Bicyclooctene Carbaldehyde 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 Isopropyl Methyl Bicyclooctene Carbaldehyde.
- 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 family of bicyclic aldehydes. It is created in a laboratory to mimic the scent of natural woody and amber notes, and is one of the most popular fragrance ingredients in modern perfumery.
How it works
It works by binding to olfactory receptors in the nose, producing a perception of a warm, woody, slightly sweet scent. In a cosmetic product, it simply contributes to the overall fragrance profile and has no known functional effect on the skin's structure or health.
Pros
Pleasant scent profile
Provides a warm, woody, amber-like aroma that many find appealing and sophisticated.
Low irritation risk for most
At typical use levels, it is considered low-irritant for the general population, making it a common choice in mass-market fragrances.
Cons and cautions
No skincare benefit
It is purely a fragrance ingredient and does not moisturize, soothe, or improve skin health in any way.
Potential allergen
Can cause allergic contact dermatitis in people with fragrance sensitivities, leading to redness, itching, or rash.
Best for
- People who enjoy a warm, woody fragrance in their skincare
- Those without known fragrance sensitivities
Use caution if
- Individuals with a known allergy or sensitivity to fragrance ingredients
- People with very sensitive or reactive skin
Usage tips
Safety summary
Generally recognized as safe for most people at typical cosmetic concentrations, but it is a known allergen for a small subset of the population. Regulatory bodies require it to be listed on ingredient labels when present above certain thresholds.
Research notes
Research confirms its role as a contact allergen in some individuals, with patch test studies showing positive reactions in about 1-3% of people tested. No evidence of carcinogenicity or systemic toxicity at cosmetic use levels.
Common label clues
- Typical concentration
- Typically used at 0.1% to 1% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other countries, subject to concentration limits in some regions due to allergen potential.
- Common uses
- Perfumes, Body lotions, Facial moisturizers, Cleansers
- Environmental note
- As a synthetic compound, it is not biodegradable and may accumulate in the environment, though its overall impact is considered low at current usage levels.
Good to know
- This ingredient is also known as Iso E Super, a trademarked name for a specific isomer mixture.
- It is often used as a base note in perfumery because it lasts a long time on the skin.
Common questions
What is Isopropyl Methyl Bicyclooctene Carbaldehyde in beauty products?
This is a lab-made ingredient that smells like a mix of cedarwood and amber. It's added to many beauty products to give them a pleasant, sophisticated scent. It doesn't moisturize, exfoliate, or treat any skin concerns—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with very sensitive skin or fragrance allergies.
What does Isopropyl Methyl Bicyclooctene Carbaldehyde do in a beauty product?
It works by binding to olfactory receptors in the nose, producing a perception of a warm, woody, slightly sweet scent. In a cosmetic product, it simply contributes to the overall fragrance profile and has no known functional effect on the skin's structure or health.
Is Isopropyl Methyl Bicyclooctene Carbaldehyde safe for most people?
Generally recognized as safe for most people at typical cosmetic concentrations, but it is a known allergen for a small subset of the population. Regulatory bodies require it to be listed on ingredient labels when present above certain thresholds.
Who should be careful with Isopropyl Methyl Bicyclooctene Carbaldehyde?
Individuals with a known allergy or sensitivity to fragrance ingredients People with very sensitive or 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.