The search results provide information on perfume ingredients, reformulations, and the fragrance industry's lack of transparency. The Environmental Working Group (EWG) highlights that fragrance ingredients may be produced by chemical synthesis or derived from petroleum or natural raw materials. The fragrance industry has published safety assessments for only 34% of the unlabeled ingredients, and widely recognized brand-name perfumes and colognes contain secret chemicals, sensitizers, and potential hormone disruptors
. One example of perfume ingredients is the Oscar de la Renta Oscar Signature Collection, which includes alcohol denat, water, fragrance, and specific compounds like alpha isomethyl ionone, linalool, and geraniol
. Perfume reformulations involve updating and modernizing a fragrance while maintaining its original character. Signature ingredients essential to the fragrance's identity are usually included, and the reformulation process is a collaborative effort involving perfumers, marketing professionals, and research scientists
. The fragrance industry's lack of transparency is also highlighted, with perfume formulas being treated as industry secrets. Fragrance formulas are not required to be disclosed, and the use of synthetic ingredients and the opacity of perfume formulas are noted concerns
