This article summarizes textile dye prevalence studies and makes recommendations for advancing knowledge about textile-dye sensitization. Prevalence data is provided by study and by dye. Dermatology teams are encouraged to conduct textile-dye prevalence studies in countries other than Italy, include dyes for which the least prevalence data has been collected, to standardize method of application and reading, and to verify purity and identity of dyes used for patch testing. Testing with pure dyes and other chemicals in dye formulations should provide insights in choosing dye systems that will decrease sensitization.