COSRX The Niacinamide 15 Serum vs The Ordinary Hyaluronic Acid 2% + B5
COSRX
The Niacinamide 15 Serum
~$18· 20ml
NiacinamideSodium PCA
The Ordinary
Hyaluronic Acid 2% + B5
~$9· 30 ml
Hyaluronic AcidPanthenol
Actives breakdown
| Active ingredient | COSRX | The Ordinary |
|---|---|---|
| Niacinamide | ✓ | — |
| Sodium PCA | ✓ | — |
| Hyaluronic Acid | — | ✓ |
| Panthenol | — | ✓ |
Layering & Safety
Combined Verdict
Safe to layer
No layering conflicts flagged between these two. Patch-test new actives as usual.