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Allergen of the Year
Allergen of the Year is an annual "award" of dubious distinction voted upon by the American Contact Dermatitis Society. This is "designed to draw attention to allergens that are very common, under-recognized, merit more attention because they are causing significant allergic contact dermatitis or are no longer causing significant relevant disease (as in thimerosal)".
2013 – Methylisothiazolinone - This chemical is used as a preservative in many cosmetics, lotions, and makeup removers; some of its side effects include flaky or scaly skin, breakouts, redness or itchiness, and moderate to severe swelling in the eye area.
2006 – p-Phenylenediamine - PPD is the hair dye chemical that is used to augment black henna tattoos. It has been shown to cause severe blistering and scarring, and its topical use is banned in some countries.
^Ehrlich, A; Belsito, D. V. (2000). "Allergic contact dermatitis to gold". Cutis. 65 (5): 323–6. PMID10826096.
^Pratt, M; Taraska, V (2000). "Disperse blue dyes 106 and 124 are common causes of textile dermatitis and should serve as screening allergens for this condition". American Journal of Contact Dermatitis. 11 (1): 30–41. doi:10.1016/S1046-199X(00)90030-7. PMID10684387.