Alpha-isomethyl ionone
* A synthetic compound in the form of a colorless liquid.
Functions:
Used as a perfume. Adds fragrance to a variety of products including aftershave lotion, bubble baths, hair care products and moisturizers.
Safety Measures/Side Effects:
It’s been known to irritate the skin and trigger allergic reactions for some people. After evaluating the potential side effects of Alpha-isomethyl Ionone, the International Fragrance Association (IFRA) banned the ingredient from being mixed into fragrance products (i.e. perfume, cologne). But you can still find this ingredient in a variety of other cosmetics that are not categorized as a “fragrance.”
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Dear Sir/Madam,
I am writing to let you know of my concern over the use of alpha-isomethyl ionone in Lenor Concentrate fabric conditioners. This has recently been added to their "new" range. It was immediately noticable that the residual smell, after clothes had been washed, was unpleasant and very long lasting. So much so that my partner could not sleep in sheets washed in Lenor Spring Awakening because she felt sick from the smell. Over the last few days it has been apparent that she is also suffering from a constantly runny nose, similar to her symptoms of hayfever in the summer months. Could this be related?
Many thanks,
Paul Richards B.Sc.
Posted on November 15, 2009 at 4:30 am
Does Ionone contain iodine or is it the same as iodine?
Posted on August 14, 2010 at 7:33 pm
I found this component in Guerlain Jasminora, a new release that I bought in April 2011, if it has been banned by IFRA 5-6 years ago, why is it still used by perfumery compagnies??
Posted on July 6, 2011 at 5:05 pm
It was NOT banned by IFRA "from being mixed into fragrance products (i.e. perfume, cologne)". It was not banned by IFRA whatsoever. Rather, the amount that could mixed into fragrance products was restricted (i.e. limited) in the 43rd Standard by IFRA and may continue to be used in fragrance products, including products which go on the lips. See "Methyl ionone, mixed isomers" www.ifraorg.org/view_document.aspx?docId=22103 for more information.
Posted on August 15, 2011 at 6:17 am
I noticed I came down with severe fever that was refractory to treatment. After some time I began to suspect my diets but I could not place my finger on any thing that could cause fever for such a long time. I shifted my attention to my cosmetics. I realised that on the days I used any other anti perspirant I did not have fever whereas if I used a particular anti perspirant, I came down with a severe fever. I soon became curious, and when I went through the list of ingredients I discovered that alpha isomethyl ionone was the culprit. I promptly stopped using the product and the fever disappeared altogether.
Posted on October 31, 2011 at 5:27 pm
I was diagnosed some years ago with an allergic response to methychloroisothiazolinone but have recently started showing a similar reaction to something else. From checking recently purchased products, I have found one (Redken Thickening Lotion hair product) to contain alpha-isomethylionone which seems to be the problem. It makes life extremely difficult tring to avoid these substances and I really wish manufacturers would stop using them given that they are known allergens. They are even used in products which are labelled as 'sensitive', 'hypoallergenic and 'allergy tested' which is very misleading.
Posted on November 14, 2011 at 4:39 am