Tia'M C-Source Serum Review

Beauty Review: Tia’m Korea My Signature C-Source Serum (former OST Original Pure Vitamin-C C20 Serum)

Hey bbs! I know, I know, I’m far behind my reviews, but as promised, here’s my review of the My Signature C-Source Serum from Tia’m Korea. Jsyk, this serum was known as the OST Original Pure Vitamin-C C20 Serum before. Yes, they changed their brand & product name, but it still has its great and effective ingredients! ❤

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