Brand Comparison
TIAM vs Mediheal
A head-to-head comparison of two popular K-beauty brands. Which one is right for your skin?
Our Pick
Mediheal
Higher editor rating (9 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
Mediheal
Mediheal is the top-selling skincare brand at Olive Young for two years running โ beating more than 3,000 brands. Their sheet masks created the modern sheet mask category, and their Madecassoside Blemish Pad saw 820% year-over-year growth. If you only add one new sheet mask brand to your routine, make it this one.
Pros
- โ #1 selling brand at Olive Young
- โ Clinical-grade sheet mask formulations
- โ The Madecassoside line is category-defining
- โ Affordable daily-use pricing
Cons
- โ Sheet masks are single-use and generate waste
- โ Some older lines contain fragrance
- โ Huge catalog can be overwhelming










