COSRX Pure Vitamin C 23% Serum vs The Ordinary Niacinamide 10% + Zinc 1%
COSRX
Pure Vitamin C 23% Serum
~$22· 20g
Vitamin CVitamin EHyaluronic Acid
The Ordinary
Niacinamide 10% + Zinc 1%
~$6· 30 ml
Niacinamide
Actives breakdown
| Active ingredient | COSRX | The Ordinary |
|---|---|---|
| Vitamin C | ✓ | — |
| Vitamin E | ✓ | — |
| Hyaluronic Acid | ✓ | — |
| Niacinamide | — | ✓ |
Layering & Safety
Combined Verdict
Safe to layer
No layering conflicts flagged between these two. Patch-test new actives as usual.