Alpha-Isomethyl Ionone

Alpha-Isomethyl Ionone molecular structurePubChem

adults • Skin contact product

Check for Different Age (6 available)

Is this safe for adults to use Alpha Isomethyl Ionone?

✅
YES - Generally Safe
Danger Score: 3 (Lower is safer)
Quick Answer: Alpha Isomethyl Ionone is generally considered safe for adults when used in topical products. Adults generally have higher tolerance.

ℹ️General Overview

For adults, this fragrance ingredient is usually safe for everyday skin products, but it is known to cause allergic reactions in some people. Most adults will not have a problem, but people with fragrance sensitivity or very sensitive skin are more likely to react.

✅What to Do

If you are trying a new product that lists this ingredient, do a small patch test on your inner arm and wait 24–48 hours. Use products that list ingredients if you have had fragrance reactions before. Avoid applying it to broken or irritated skin. If you notice redness, itching, swelling, or a rash, stop using the product right away and wash the area. Consider choosing fragrance-free products if you have a history of skin allergies.

⚠️Warnings

Health and safety authorities in Europe and other agencies have flagged this ingredient as a possible skin allergen and require it to be listed on product labels because of allergy concerns (references include European cosmetics rules, the U.S. environmental authority, the International Fragrance Association, and the European Chemicals Agency). Environment Canada has also noted possible environmental harm. Because of these findings, watch for labeled 'alpha-isomethyl ionone' or general 'fragrance' on ingredient lists, and follow the patch-test and stop-use advice above.

Confidence: MEDIUM

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Safety Risk Labels

This ingredient has the following documented risks:

Irritant: This chemical is listed as a known human allergen and as causing dermal reactions by multiple regulatory bodies (the EU cosmetics listing and fragrance industry guidance, with strong evidence noted by the U.S. EPA). That means it can cause skin redness, itching, or rash after contact.
Immune system: Several authorities identify this ingredient as an allergen or possible immune-system toxicant (noted by the EU cosmetics rules, the EPA, and related fragrance regulators), so it can trigger immune responses rather than being inert on the skin.
Eczema: Because this ingredient is flagged for causing skin allergy and limited dermal toxicity by agencies such as ECHA and the EU cosmetics framework, it can worsen or trigger eczema and similar skin conditions in sensitive children.
Environmental: An environmental agency has identified this substance as a suspected environmental toxin, meaning it may harm wildlife or the environment if released, so there is some ecological concern with its use.

Tap or hover over labels to see detailed risk information.

Alternative Names for Alpha-Isomethyl Ionone

This ingredient may also be listed as:

alpha-isomethyl iononeALPHA-IONONE, ISOMETHYL-(E)-3-METHYL-4-(2,6,6-TRIMETHYLCYCLOHEX-2-EN-1-YL)BUT-3-EN-2-ONE(3E)-3-METHYL-4-(2,6,6-TRIMETHYLCYCLOHEX-2-EN-1-YL)BUT-3-EN-2-ONE4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-METHYL-3-BUTEN-2-ONEMETHYL-ALPHA-ISOIONONE15789-90-9.ALPHA.-CETONE3-BUTEN-2-ONE, 3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-4-(2,6,6-TRIMETHYL 2-CYCLOHEXEN-1-YL)-3-METHYL-3-BUTEN-2-ONE(3E)-3-METHYL-4-(2,6,6-TRIMETHYL-2-CYCLOHEXEN-1-YL)-3-BUTEN-2-ONE

Always check ingredient labels carefully, as ingredients may be listed under different names.

Products Containing Alpha-Isomethyl Ionone

This ingredient is found in the following products:

This list shows products that contain Alpha-Isomethyl Ionone or its alternative names.

Research Articles on Alpha-Isomethyl Ionone

Scientific research related to this ingredient:

Quantitative risk assessment of allergens leaching from menstrual hygiene products.

PMID: 36067853PubMed ↗

These research articles provide scientific evidence about Alpha-Isomethyl Ionone safety and effects.

Common Questions About Alpha-Isomethyl Ionone

Is this safe for adults to use Alpha-Isomethyl Ionone?

Yes, Alpha-Isomethyl Ionone is generally considered safe for adults based on current research.

What are the irritant risks of Alpha-Isomethyl Ionone for adults?

Can cause skin redness, itchiness, or rashes—especially on sensitive baby skin.

What are the immune system risks of Alpha-Isomethyl Ionone for adults?

Could weaken or confuse immune system.

What are the eczema risks of Alpha-Isomethyl Ionone for adults?

Linked to triggering or worsening eczema and similar skin conditions.

What are the environmental risks of Alpha-Isomethyl Ionone for adults?

Possible negative effects on the environment

What products contain Alpha-Isomethyl Ionone?

Alpha-Isomethyl Ionone is commonly found in skincare products, cosmetics, and topical applications. Always check ingredient labels before use.

When can adults using products with Alpha-Isomethyl Ionone?

The appropriate age depends on the specific ingredient properties and concentration. This analysis is for adults. Use the age selector above to check other ages.

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