numbuzin
No.5 Goodbye Blemish Serum
A medium serum & treatment for hyperpigmentation and acne, built around Niacinamide and PHA, with reviewed formula data, and some patch-test cautions.
Routine step
Serums & Treatments
Category
Serum & Treatment
When to use
Night
Skin fit
Dark spots
10/10
Acne
10/10
Pores
10/10
Texture
9/10
Best for
Key ingredients
Niacinamide
Regulates sebum, reduces hyperpigmentation, and minimizes pores
Salicylic Acid
Beta-hydroxy acid that exfoliates inside pores to help reduce clogged pores
Centella Asiatica Extract
Accelerates skin recovery and reduces inflammation
Cautions
Best kept for night. Some actives do not play nicely with daytime sun.
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.