7. Formaldehyde-based Hair Straightening Treatments
Many hair straightening treatments, including popular Brazilian Keratin Treatments, contain formaldehyde, a chemical that can irritate your eyes, throat, and skin. Stylists and clients alike risk exposure every time these products are used, yet in the U.S., many remain on the market without strict regulation. Protect your health by researching ingredients carefully and choosing formaldehyde-free alternatives.