A method of reducing, avoiding or eliminating allergic contact dermatitis caused by the oxidation products of odorous chemical conventionally used in fragranced products and perfumes, comprising inhibiting oxidation of the odorous chemicals. Preferably, the oxidation is inhibited or reversed using an antioxidant selected from the group including vitamin E, vitamin E acetate, vitamin E linoleate, vitamin E esters, butylated hydroxytoluene (BHT) and butylated hydroxyanisole (BHA). The skin may be pre-/post-treated with the formulation before/after application of the fragranced product or perfume. A composition for reducing induction of contact allergy or reducing elicitation of allergic contact dermatitis of, in or on the skin in response to a fragranced product or perfume comprising an antioxidant agent is also provided.