This Is A Hair Process Call Keratin For The Hair.

This is a hair process call keratin for the hair. To solidify the components in the process the hair dresser flat irons the hair. But, in the keratin product is formaldehyde. The flat iron seals the keratin in the hair, but let's out the formaldehyde. Every manufacture states that there is a low percentage of formaldehyde that can't harm you . I'm not sure if it 0.03 or 0.06. Is the process safe. I know there is formaldehyde in other products like nail polish. If it's not safe , why hasn't been recalled. Every beauty salon offers this process. Desperate to know. My daughter uses the keratin process