Q: I've recently coloured my hair, and I love it, but I'm thinking of getting a permanent
wave to add more body to my hairstyle. Is this going to be a problem? How long should I wait?
A: Today's permanent waving products have special formulas available for use on
colour-treated hair. These products are designed to minimize problems for people with tinted
or coloured hair, but you can expect some lightening to occur. Also, if your hair has low
porosity, you will likely find that a stronger perming formula is needed, and the stronger
the perm, the more lightening can (and likely will) occur.
Ideally, you want to perm your hair before you colour it, and you'll want to wait
between chemical processes in order to let your hair return to a more normalized balance
and condition. Two weeks is usually sufficient.
However, in the case of pre-colored hair and potential lightening, it's always
possible to "boost" the colour once again after you've gotten your perm. Talk to your
stylist and ask about getting a colour refresh - like a conditioning tint or soap cap - to add back what the perm took away.