Ingredient review
Phenylacetaldehyde Hexyleneglycol Cyclic Acetal
INCI: PHENYLACETALDEHYDE HEXYLENEGLYCOL CYCLIC ACETAL
A synthetic fragrance ingredient that adds a floral, green scent but offers no skincare benefits and may cause sensitivity in some people.
In plain English
This is a man-made chemical that gives products a pleasant floral, green scent. It doesn't moisturize, treat, or improve your skin in any way—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with sensitive skin or fragrance 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.
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
Phenylacetaldehyde Hexyleneglycol Cyclic Acetal 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 Phenylacetaldehyde Hexyleneglycol Cyclic Acetal.
- 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 aromatic compound created by reacting phenylacetaldehyde with hexylene glycol. It is used exclusively as a fragrance ingredient in cosmetics and personal care products.
How it works
It evaporates from the product's surface after application, releasing a floral, green scent that provides a sensory experience. It does not interact with the skin's biology or provide any functional skincare benefit.
Pros
Pleasant floral scent
Adds a delicate, green-floral fragrance that many people find appealing in lotions, creams, and perfumes.
Low usage concentration
Used at very low levels in formulas, which helps minimize the risk of irritation for most users.
Cons and cautions
No skincare benefit
Provides only fragrance—no moisturizing, anti-aging, or skin-repairing properties.
Potential allergen
Can cause allergic reactions or irritation in people with fragrance sensitivities, especially with repeated use.
Best for
- People who enjoy scented skincare and have no known fragrance allergies
- Those looking for a floral, green scent in their products
Use caution if
- Individuals with sensitive skin or a known allergy to fragrance ingredients
Usage tips
Safety summary
Generally recognized as safe at the low concentrations used in cosmetics, but it can be a skin sensitizer for some individuals. Regulatory bodies like IFRA and the Cosmetic Ingredient Review (CIR) have evaluated it and consider it safe within established limits.
Research notes
Limited peer-reviewed research specifically on this compound, but it is well-studied as part of the broader class of fragrance allergens. The CIR has reviewed similar fragrance acetals and found them safe at low levels.
Common label clues
- Typical concentration
- Typically used at very low levels, often below 1%
- Regulatory status
- Approved for use in cosmetics in the EU, US, and many other regions, subject to concentration limits set by the International Fragrance Association (IFRA).
- Common uses
- Fragranced skincare, Perfumes, Body lotions, Hair products
- Environmental note
- As a synthetic compound, it is not biodegradable and may accumulate in the environment, though its low usage concentration reduces overall impact.
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 set safe usage limits for fragrance ingredients in cosmetics.
Common questions
What is Phenylacetaldehyde Hexyleneglycol Cyclic Acetal in beauty products?
This is a man-made chemical that gives products a pleasant floral, green scent. It doesn't moisturize, treat, or improve your skin in any way—it's purely for fragrance. While generally considered safe at low levels, it can be a potential irritant for those with sensitive skin or fragrance allergies.
What does Phenylacetaldehyde Hexyleneglycol Cyclic Acetal do in a beauty product?
It evaporates from the product's surface after application, releasing a floral, green scent that provides a sensory experience. It does not interact with the skin's biology or provide any functional skincare benefit.
Is Phenylacetaldehyde Hexyleneglycol Cyclic Acetal safe for most people?
Generally recognized as safe at the low concentrations used in cosmetics, but it can be a skin sensitizer for some individuals. Regulatory bodies like IFRA and the Cosmetic Ingredient Review (CIR) have evaluated it and consider it safe within established limits.
Who should be careful with Phenylacetaldehyde Hexyleneglycol Cyclic Acetal?
Individuals with sensitive skin or a known allergy to fragrance ingredients
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.