BIOHEAL BOH vs TIRTIR — side by side, no bias.
Our pick
Probioderm Collagen Remodeling Serum
8.7/10 · BIOHEAL BOH
| Probioderm Collagen Remodeling Serum | Niacinamide 20% Serum | |
|---|---|---|
| Brand | BIOHEAL BOH | TIRTIR |
| Category | serum | serum |
| Editor Rating | 8.7/10 ★ | 8.6/10 |
| Category | serum | serum |
| Texture | Lightweight non-sticky serum | Lightweight, slightly viscous serum |
| Finish | Refined, smoothed, brightened | Matte, refined, even-toned |
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| Verdict | The renewed version of BIOHEAL BOH's bestselling Tightening Collagen Serum — 45,000 micro-collagen capsules, 12 peptides, plus PHA and LHA for the gentle exfoliation that handles pore visibility. Clinical testing claims 37.2% pore size improvement and 40.2% pore volume improvement after just two weeks of daily use; even allowing for marketing-friendly numbers, the actives stack supports real performance. Targets both horizontal and vertical pore enlargement (the actual mechanism for what looks like 'sagging pores' on mature skin). Lightweight, non-sticky, suitable for daily AM/PM use across most skin types. | A triple-threat brightening serum that stacks 20% niacinamide with 2% alpha-arbutin and glutathione — the kind of active concentration you'd expect from a clinical brand, not a $25 bottle. Tackles dark spots, enlarged pores, excess sebum, and early fine lines simultaneously. The texture is surprisingly lightweight for such a high-concentration formula, absorbs without pilling, and doesn't cause the flushing that cheap niacinamide serums are notorious for. If The Ordinary taught the world that niacinamide works, TIRTIR taught them it doesn't have to feel like a science experiment. |
