Why this product
Vitamin C newbies. Gentle brightening without the irritation. K-beauty's stable formula.
What it does: Concentrated vitamin serum that brightens and evens skin tone with stable vitamin C
Skin types: all skin types, sensitive-friendly.
vs SkinCeuticals: $16 vs $45. Delivers similar brightening benefits to high-end vitamin C serums but with gentler, more stable ingredients that won't cause irritation or oxidize quickly.
Consistently rated Holy Grail across an estimated 573+ community discussions on r/AsianBeauty. Most common praise: Finally a vitamin C that doesn't irritate my sensitive skin but still gives me that glow.
Vitamin active step
Step 5 in your routine. Sign in to add it.
Where in your routine
Why this step exists in K-beauty
K-beauty prioritizes gentle, buildable actives that work with your skin rather than against it, delivering results through consistent use rather than aggressive concentration.
How to use
Key ingredients
Details
Western equivalent
SkinCeuticals
CE Ferulic
$45
Delivers similar brightening benefits to high-end vitamin C serums but with gentler, more stable ingredients that won't cause irritation or oxidize quickly.
The bottom line
Numbuzin No.5 Vitamin Concentrated Serum is a vitamin active that costs $16 for 30ml. The Western equivalent (SkinCeuticals) runs $45 — you save 64%. Best for all skin types, sensitive-friendly skin.