Is it Formaldehyde-Free? How many days after treatment can hair be washed? How long does result last?
Joyce S. asked on Aug 16, 2012
Yes, this treatment is Formaldehyde-Free. You can get your hair wet and condition it immediately, but you will need to wait 48 hours to shampoo your hair. The results last 3-6 months.
Brette V. from Groupon replied on Aug 17, 2012