COSRX
Advanced The Vitamin C 23 Serum Duo
Shoppers appear to value it as a well-rated bestseller vitamin C serum, with the main caveat that a potent vitamin C format may not suit rea
From $42.68 · Amazon *
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Signal breakdown
Search momentum
79.8
Shop velocity
70.9
Review sentiment
61.5
8-week signal trend
Current signal onlyNow 42
Now
History starts after weekly snapshots.
Key ingredients
| Ingredient | Function | Evidence |
|---|---|---|
| Vitamin C | Helps improve the look of dullness and uneven tone | Strong |