Does straightening cream contain formaldehyde?
Does straightening cream contain formaldehyde? A group of hair straightening products known as “Brazilian Keratin Treatment” (BKT) may contain formaldehyde. Exposure to formaldehyde can cause irritation of the eyes, nose, throat, and skin. Formaldehyde is classified as a known human carcinogen (cancer-causing chemical). Does hair straightening have formaldehyde? A hair straightening or smoothing solution is […]