This is an old review hence why I have the old bottle before they rebranded as Tiam! I’m still working through my bottle of Melano CC Essence and I may repurchase Tiam’s vitamin c serum when I finish it. Product claims: A 20% vitamin c serum that will brighten and even out your skin tone, minimize … Continue reading Product Review: OST C20 Original Pure Vitamin C20 Serum/Tiam My Signature C-Source