Then in 2020, the International Fragrance Association (IFRA), the industry’s self-regulatory body, imposed a larger-than-usual number of bans, restrictions and specifications (such as purity criteria) on ingredients, with implementation required by early this May for new creations, and by May 10 next year for existing perfumes. (An estimated 80 to 90 percent of the perfume industry are members of IFRA and follow its standards.)
— Read more in A Big Stink in the World of Perfume at The Washington Post Magazine.