Fragrances are now used in almost every cleaning, laundry, and personal-care product on the market. Since people have been using perfumes for hundreds of years. It’s reasonable to wonder why the problem of using scents has surfaced only recently.
Until the 20th century, perfumes were made from natural ingredients derived directly from plants and animals, and as fragrances became cheaper and more widespread, they also became more synthetic.
The National Academy of Sciences reports that 95% of the chemicals used in fragrances today are synthetic compounds derived from petroleum, including known toxins capable of causing cancer, birth defects, central nervous system disorders and allergic reactions.