burden of proof that a new substance is not safe on the EPA. The EPA, however, does not conduct independent safety testing but relies on data provided by the manufacturer. A 2019 study of the top-selling skin moisturizers found 45% of those marketed as "fragrance-free" contained fragrance. List of chemicals used as fragrances In 2010, the International Fragrance Association published a list of 3,059 chemicals used in 2011 based on a voluntary survey of its members, identifying about 90% of the world's production volume of fragrances. See also Aroma of wine Eau de toilette Flavour and Fragrance Journal Fragrances of the World Foodpairing Odor Odor detection threshold Odorizer, a device for adding an odorant to gas flowing through a pipe Olfaction Olfactory receptor Olfactory system Pheromone vabbing References Organic chemistry Olfaction Flavors Perfume ingredients