4
..!
:
keratin with formaldehyde
But some health concerns came, as it became public, that many of these treatments contained high levels of formaldehyde. In recent years, some (but not all!) treatments used in the US have reformulated as a precaution for both the consumers and the technicians who apply the treatments (and therefore have much more frequent/prolonged exposure).
http://amominredhighheels.com/formal...tin-treatment/
:
keratin without formaldehyde
ɿ
formaldehyde
formaldehyde without formaldehyde
D:
^_^: