iUNIK vs TIAM — side by side, no bias.
Our pick
Beta Glucan Power Moisture Serum
9/10 · iUNIK
| Beta Glucan Power Moisture Serum | Vita B3 Source | |
|---|---|---|
| Brand | iUNIK | TIAM |
| Category | serum | serum |
| Editor Rating | 9/10 ★ | 8.5/10 |
| Category | serum | serum |
| Texture | Slightly viscous but watery serum that absorbs cleanly | Lightweight water-serum |
| Finish | calm, hydrated without shine | Matte absorbed |
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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. | TIAM's brightening hero and the K-beauty answer to The Ordinary Niacinamide 10% + Zinc 1% — but with alpha-arbutin instead of zinc for a more targeted melanin-inhibiting angle. At 10% niacinamide + 2% alpha-arbutin, this is a serious clinical-concentration dark spot serum at a budget Korean price. The My Signature C Source's quieter, more niacinamide-forward sibling. |
