JUMISO
Niacinamide 20 Serum
A medium serum & treatment for hyperpigmentation and pores, built around Niacinamide, with reviewed formula data, and some patch-test cautions.
Routine step
Serums & Treatments
Category
Serum & Treatment
When to use
Morning or night
Skin fit
Dark spots
10/10
Pores
10/10
Dullness
9/10
Texture
9/10
Best for
Key ingredients
Niacinamide 20%
Reduces hyperpigmentation and strengthens skin barrier
Arbutin
Inhibits tyrosinase for melanin reduction
Cautions
Sensitive skin may sting. Patch-test before using it all over.
Formula checked
Koracle has a reviewed ingredient source for this product.
Checked 2026-05-01
Available
Check current price before you buy.
Koracle is skincare education, not medical or dermatology advice. Patch-test new products. Ask a licensed dermatologist about acne, rosacea, eczema, allergic reactions, pregnancy concerns, or symptoms that persist.