Wait 2 weeks
The suggestion is 24 hours, but a full 48 hours would be better. The longer between processes means a better result. The products on the market today are much better in terms of how much damage they do to the hair follicle.
As always, if it is the first time you are perming your hair, then do the test curl process to see how your hair will react to the perm solution.
As always, if it is the first time you are perming your hair, then do the test curl process to see how your hair will react to the perm solution.
I think you only have to wait 24 hours with the new ones, nowhere near as harsh as when our mom's were getting this combination! Ask your hairdresser to be sure, or if you're doing it yourself, pay attention to what the packages say...