Keratin -based smoothing treatments last for up to 12 weeks. Posted byAnonymous May 17, 2026 Questions Kerаtin -bаsed smооthing treаtments last fоr up to 12 weeks. Show Answer Hide Answer Tags: Accounting, Basic, qmb, Post navigation Previous Post Previous post: Acidic perm solutions are stronger, therefore making it more…Next Post Next post: A client wants to strengthen coarse hair. The client mention…