9. Are straightening treatments safe?
Some treatments contain chemicals that can cause short-term and long-term complications. Short-term issues include irritation of the eyes and skin, possible damage to your scalp and hair as well as upper respiratory tract discomfort. Long-term risks are much more troubling and some toxicologists argue that any product containing formaldehyde should be banned. Not all treatments include chemicals, so if you have a trusted hair stylist discuss with them what you want and which type would be best (and safest) for you.