Yes, many of the chemicals in personal grooming and cosmetic products cause harm to people's health. Many have colorings, preservatives, and fragrances that irritate people's bodies internally and externally. Further, many people don't seem to understand that many of these chemicals can actually be breathed in and cause internal damage or cause allergic reactions, sometimes severe (even from things such as automatic dishwasher detergent).
Many chemicals used in fragrances are carcinogenic and otherwise toxic but millions of uninformed people value a particular scent over their own health and that of those around them. For example, people shave (causing cuts visible and not so) their underarms or legs then coat these cuts with fragrance and chemical laden deodorants or body lotions.
Fragrances and other chemicals have always made me sneeze and wheeze since I was a little girl, as I learned more about the everyday chemicals we can choose not to be in contact with, I began to understand why.