Is the Keratin smoothing treatment damaging to hair ? Does it contain formaldehyde.? How is it different from Brazilian straightening?
Chip M. asked on Aug 9, 2012
no formaldehyde whatsoever. it's actually great on the hair.... your hair is naturally made of keratin, so this adds to it. brazilian straightening has been found by the fda to contain formaldehyde.
Kristi S. from Merchant replied on Aug 11, 2012