Brand Comparison
TIAM vs By Wishtrend
A head-to-head comparison of two popular K-beauty brands. Which one is right for your skin?
Our Pick
By Wishtrend
Higher editor rating (8.5 vs 7.5)
TIAM
TIAM is the approachable alternative to more aggressive vitamin C brands. The My Signature C Source is one of the best entry-level L-ascorbic acid serums you can buy โ effective without being irritating. A solid pick for anyone new to actives.
Pros
- โ Gentle L-ascorbic acid formulations
- โ Dermatologist-developed
- โ Affordable and widely available
- โ Good starter vitamin C
Cons
- โ Not as potent as specialist vitamin C brands
- โ Packaging is functional, not premium
- โ Smaller catalog
By Wishtrend
By Wishtrend is Wishtrend in-house brand and it is excellent. Their Pure Vitamin C 21.5 Advanced Serum is one of the most potent L-ascorbic acid serums at its price point, and the Polyphenol in Propolis 15 Ampoule is a cult favorite for acne-prone skin. The brand is the definition of formulator-first K-beauty.
Pros
- โ Clinically-potent vitamin C formulations
- โ Effective for pigmentation and acne
- โ Strong transparency and ingredient education
- โ Affordable for the active strengths
Cons
- โ Potent actives can be irritating for beginners
- โ Vitamin C oxidizes if not stored properly










