KSECRET SEOUL 1988 Serum vs The Ordinary Niacinamide 10% + Zinc 1%
KSECRET
SEOUL 1988 Serum : Retinal Liposome 2% + Black Ginseng
~$15.4· Standard Size
Glycerin
The Ordinary
Niacinamide 10% + Zinc 1%
~$6· 30 ml
Niacinamide
Actives breakdown
| Active ingredient | KSECRET | The Ordinary |
|---|---|---|
| Glycerin | ✓ | — |
| Niacinamide | — | ✓ |
Layering & Safety
Combined Verdict
Safe to layer
No layering conflicts flagged between these two. Patch-test new actives as usual.