Ingredient review

Amylcinnamal Dimethyl Acetal

INCI: AMYLCINNAMAL DIMETHYL ACETAL

A synthetic fragrance ingredient that provides a jasmine-like scent but may cause skin irritation in sensitive individuals.

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In plain English

Amylcinnamal Dimethyl Acetal is a man-made chemical added to products to give them a pleasant floral smell, similar to jasmine. It belongs to a group of fragrance ingredients that are common in perfumes and scented skincare. While it makes products smell nice, it can sometimes irritate sensitive skin or trigger allergic reactions, especially in people who are prone to fragrance sensitivities.

Quick decision guide

Useful, but context matters

Amylcinnamal Dimethyl Acetal 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.

  1. Step 1Start with the score, then check the irritation and clogging risk before judging Amylcinnamal Dimethyl Acetal.
  2. Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
  3. 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

moderate

Can bother some users, especially with frequent use, damaged skin, or strong companion ingredients.

Clogging risk

low

Less likely to feel heavy or contribute to clogged pores for most skin types.

Evidence level

moderate

There is useful support, but formula details and claim strength still matter.

What it is

A synthetic acetal derivative of amylcinnamal, used primarily as a fragrance ingredient in cosmetics and personal care products.

How it works

It functions solely as a fragrance ingredient, providing a sweet, floral, jasmine-like aroma. It does not have any active skincare benefits like moisturizing or anti-aging; its role is purely sensory.

Pros

Pleasant floral scent

Adds a sweet, jasmine-like fragrance that many people find appealing in lotions, cleansers, and perfumes.

Widely used and stable

As a synthetic ingredient, it is stable in formulations and provides consistent scent performance over time.

Cons and cautions

Potential skin irritant

Can cause redness, itching, or stinging in people with sensitive skin or fragrance allergies, especially at higher concentrations.

No skincare benefit

Provides only fragrance and does not contribute to moisturizing, soothing, or any other functional skincare goal.

Best for

  • People who enjoy scented products and do not have fragrance sensitivities
  • Those looking for a jasmine-like scent in their routine

Use caution if

  • Individuals with known fragrance allergies or sensitive, reactive skin

Usage tips

If you have sensitive skin, patch test any product containing this ingredient on a small area before full use.
Look for products labeled 'fragrance-free' if you want to avoid this and other synthetic fragrance ingredients entirely.

Safety summary

Generally considered safe for most people at low concentrations, but it is a known skin sensitizer and can cause allergic reactions in susceptible individuals. The EU requires it to be labeled as a potential allergen.

Research notes

Research primarily focuses on its role as a contact allergen. Studies show that amylcinnamal derivatives can cause allergic contact dermatitis in a small percentage of the population, particularly in those with pre-existing fragrance allergies.

Common label clues

Typical concentration
Typically used at very low levels, often below 1%
Regulatory status
Approved for use in cosmetics in the US and EU, but must be listed on the ingredient label if present above 0.01% in leave-on products or 0.001% in rinse-off products under EU regulations.
Common uses
Perfumes, Fragranced lotions, Scented cleansers
Environmental note
As a synthetic compound, its environmental persistence and biodegradability are not well-documented, but fragrance ingredients in general can contribute to water pollution.

Good to know

  • Amylcinnamal Dimethyl Acetal is listed as a potential allergen by the EU Cosmetics Regulation and must be declared on the label if present above certain levels.
  • It is chemically related to amylcinnamal, another common fragrance allergen.

Common questions

What is Amylcinnamal Dimethyl Acetal in beauty products?

Amylcinnamal Dimethyl Acetal is a man-made chemical added to products to give them a pleasant floral smell, similar to jasmine. It belongs to a group of fragrance ingredients that are common in perfumes and scented skincare. While it makes products smell nice, it can sometimes irritate sensitive skin or trigger allergic reactions, especially in people who are prone to fragrance sensitivities.

What does Amylcinnamal Dimethyl Acetal do in a beauty product?

It functions solely as a fragrance ingredient, providing a sweet, floral, jasmine-like aroma. It does not have any active skincare benefits like moisturizing or anti-aging; its role is purely sensory.

Is Amylcinnamal Dimethyl Acetal safe for most people?

Generally considered safe for most people at low concentrations, but it is a known skin sensitizer and can cause allergic reactions in susceptible individuals. The EU requires it to be labeled as a potential allergen.

Who should be careful with Amylcinnamal Dimethyl Acetal?

Individuals with known fragrance allergies or sensitive, reactive skin

Research sources

European Commission - CosIng DatabaseOpenPubMed - Fragrance Allergens ReviewOpenFDA - Fragrance Ingredients in CosmeticsOpen

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.