iUNIK vs TIAM — side by side, no bias.
Our pick
Beta Glucan Power Moisture Serum
9/10 · iUNIK
| Beta Glucan Power Moisture Serum | My Signature Red C Serum | |
|---|---|---|
| Brand | iUNIK | TIAM |
| Category | serum | serum |
| Editor Rating | 9/10 ★ | 8.3/10 |
| Category | serum | serum |
| Texture | Slightly viscous but watery serum that absorbs cleanly | Red-tinted vitamin C serum |
| Finish | calm, hydrated without shine | Velvet |
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| Verdict | iUNIK signature product and one of the best-kept secrets in sensitive-skin K-beauty. 70% beta-glucan — a powerhouse humectant and soothing agent — combined with a minimalist supporting cast. The result is a serum that hydrates like hyaluronic acid but also calms reactive skin the way centella does. Cult favorite for a reason. | Tia'm's cult vitamin C serum — 5% L-Ascorbic Acid + niacinamide + Centella asiatica extract in a buffered formulation. The 5% LAA concentration is genuinely lower-irritation than 15-20% alternatives, making this one of K-beauty's more sensitive-skin-friendly vitamin C entries. Reddit cult favorite for years. |
