COMMONLABS Vitamin C Brightening Ampoule vs Numbuzin No.5 Vitamin Concentrated Serum

Same shelf, different answers — here's the whole picture in one table. Click either product for full ingredient decode, skin-twin reviews and every retailer's landed cost.

COMMONLABS Vitamin C Brightening Ampoule
COMMONLABSVitamin C Brightening AmpouleFull breakdown →
Numbuzin No.5 Vitamin Concentrated Serum
NumbuzinNo.5 Vitamin Concentrated SerumFull breakdown →
COMMONLABS Vitamin C Brightening AmpouleNumbuzin No.5 Vitamin Concentrated Serum
StepSerumSerum
Price$24$28
Best landed cost$33.60$26
Rating★ 4.9 (24)★ 4.5 (3,300)
Evidence gradeCB
Korea signal#9 serum · Olive Young Korea (seed)
Hero ingredientsVitamin CVitamin C, Niacinamide, Glutathione
Best forDullness, Dark spots (PIH)Dullness, Dark spots (PIH)
Skin typesNormal, Combination, OilyNormal, Combination, Oily, Dry
Texturelightlight
Tone noteAll tonesAll tones
Fragrance-free
Fungal-acne safe
US stock✗ import only
Our read: Numbuzin No.5 Vitamin Concentrated Serum carries the stronger evidence grade (B); Numbuzin No.5 Vitamin Concentrated Serum wins on landed cost. If your concerns match both, evidence is the tiebreaker we'd use.

Prices and rankings are seed data pending weekly verification. Take the 60-second quiz and both products get a personal match score on their pages.