Research links contact dermatitis to cosmetic ingredients

Researchers from Valencia’s University Hospital, Valencia, Spain, have carried out a search among 2485 patients who were patch-tested for allergic contact dermatitis (ACD) for those who were allergic to cosmetic allergens, in order to find out exactly what those allergens are.

740 patients had ACD, and cosmetics caused 202 of these cases of ACD. In all, a total of 315 positive results were found for 46 different allergens, and the most responsible allergens were methylisothiazolinone, paraphenylenediamine and fragrance mixtures.

Contact dermatitis is a condition characterised by inflammation on the skin, and symptoms include redness, itching and swelling. The researchers call for a closer liaison between physicians and cosmetics producers in order for labelling to include all the potential allergens, in order that people with ACD can carefully avoid certain products.

Source: Cosmetics Design Europe

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January 2012