Cool How Long Do You Leave Toner In Your Hair For References. The exact time varies according to the toner brand and type, and the results you want to achieve. Web in general, however, it is best to leave toner on your hair for no more than 10 minutes.

How often should you go for a hair toner? Most typically toners will fade after seven weeks or so. Web how long does a toner last after your salon visit?
