Ingredient review
Isopropyl Cyclohexane Acetaldehyde
INCI: ISOPROPYL-CYCLOHEXANE-ACETALDEHYDE
A synthetic fragrance ingredient that adds a pleasant scent but may cause irritation in sensitive skin.
In plain English
This is a man-made chemical that smells nice, often described as fresh or floral. It's added to products like lotions and cleansers to give them a pleasant scent. However, like many fragrance ingredients, it can sometimes irritate sensitive skin or trigger allergies.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is useful, but some claims depend heavily on the formula.
Main practical flags: irritation is moderate; clogging risk is low.
- Source
- synthetic
- Evidence
- moderate
- Irritation
- moderate
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Isopropyl Cyclohexane Acetaldehyde can be useful, but watch for some irritation potential.
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 Cyclohexane Acetaldehyde.
- 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
moderateCan bother some users, especially with frequent use, damaged skin, or strong companion ingredients.
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 aldehyde compound used primarily as a fragrance ingredient in cosmetics and personal care products. It is not a natural extract but is created in a lab to produce a specific scent profile.
How it works
It works by evaporating from the skin and interacting with scent receptors in the nose, providing a pleasant fragrance. In a product, it simply contributes to the overall scent without providing any skincare benefit.
Pros
Pleasant scent
Provides a fresh, floral fragrance that many users enjoy in their daily skincare routine.
Low comedogenic risk
Unlikely to clog pores, making it suitable for acne-prone skin as long as no irritation occurs.
Cons and cautions
Irritation potential
Can cause redness, itching, or stinging in sensitive skin, especially at higher concentrations.
Allergen risk
As a synthetic fragrance, it may trigger allergic contact dermatitis in susceptible individuals over time.
Best for
- People who enjoy scented skincare and have no history of fragrance allergies
- Those with normal, non-sensitive skin
Use caution if
- Individuals with sensitive, reactive, or eczema-prone skin
- Anyone with a known fragrance allergy
Usage tips
Safety summary
Generally considered safe for most people at low concentrations, but it carries a moderate risk of skin irritation and allergic reactions, especially for those with sensitive skin or fragrance allergies.
Research notes
Limited peer-reviewed studies specifically on this ingredient, but it is structurally similar to other fragrance aldehydes known to cause contact dermatitis. Safety is primarily assessed through industry guidelines.
Common label clues
- Typical concentration
- Typically less than 1% in leave-on products
- Regulatory status
- Approved for use in cosmetics in the EU and US within IFRA-recommended concentration limits. Not restricted as a known allergen but monitored for safety.
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Cleansers
- Environmental note
- As a synthetic compound, it is not biodegradable and may accumulate in the environment, though typical usage levels are low.
Good to know
- This ingredient is often listed simply as 'fragrance' or 'parfum' on labels, so it may not appear by name.
- Regulatory bodies like the IFRA (International Fragrance Association) set safe usage limits for this ingredient.
Common questions
What is Isopropyl Cyclohexane Acetaldehyde in beauty products?
This is a man-made chemical that smells nice, often described as fresh or floral. It's added to products like lotions and cleansers to give them a pleasant scent. However, like many fragrance ingredients, it can sometimes irritate sensitive skin or trigger allergies.
What does Isopropyl Cyclohexane Acetaldehyde do in a beauty product?
It works by evaporating from the skin and interacting with scent receptors in the nose, providing a pleasant fragrance. In a product, it simply contributes to the overall scent without providing any skincare benefit.
Is Isopropyl Cyclohexane Acetaldehyde safe for most people?
Generally considered safe for most people at low concentrations, but it carries a moderate risk of skin irritation and allergic reactions, especially for those with sensitive skin or fragrance allergies.
Who should be careful with Isopropyl Cyclohexane Acetaldehyde?
Individuals with sensitive, reactive, or eczema-prone skin Anyone with a known fragrance allergy
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.