“…Testing α-irone would have been of interest, but this molecule is unfortunately not a marketed allergen. 2,3 According to the Research Institute for Fragrance Materials (RIFM), the skin level of α-irone in formulas for use in cosmetics should not exceed 0.22%. 2,3 Based on a maximization test carried out in 25 patients, they observed no reaction to patch tests with α-irone 10% pet.…”