Alpha-Isomethyl Ionone
Synthetic ingredient with a violet and woody scent. On the EU list of 26 fragrance allergens.
Evidence by route
Topical application
CWeak evidence. In vitro data, open-label studies, or expert consensus.
Often triggers contact allergy in people sensitive to fragrance. SCCS recommends concentration limits.
Tolerability and safety
Irritation potential
MediumAllergen risk
HighPregnancy
CautionSkin types
Suitable for
Use with caution
Frequently asked questions
Is Alpha-Isomethyl Ionone safe during pregnancy?
Alpha-Isomethyl Ionone should be used with caution during pregnancy. Consulting a dermatologist or OB-GYN is advisable.
What skin types is Alpha-Isomethyl Ionone for?
Alpha-Isomethyl Ionone suits: normal, dry, oily, combination. Use with caution in: sensitive.
Can Alpha-Isomethyl Ionone irritate the skin?
Alpha-Isomethyl Ionone has moderate irritation potential. Sensitive skin may show a transient reaction that usually settles with adaptation.
Can Alpha-Isomethyl Ionone cause an allergic reaction?
Alpha-Isomethyl Ionone has high allergen potential. Perform a patch test on the inner forearm 24 hours before facial application.