What the brand claims
In the brand’s own words, quoted as written.
“This potent Vitamin C serum delivers visible improvements in skin radiance, texture, and firmness with consistent use. Formulated with 10.5% L-Ascorbic Acid and 2% Ascorbyl Glucoside, along with Hyaluronic Acid in a water-free, patented concentrate, it helps reduce the appearance of fine lines, wrinkles, and pores while supporting skin’s natural resilience. Clinically shown to deliver visible results in just two weeks, it remains effective in the skin for up to six days and is dermatologist-tested for safety across all skin types, including sensitive skin.”
Quoted from the Kiehls product page
We quote these claims without judging them here — the verdict above weighs them against the evidence further down this page.
Ingredients22 ingredients
The full INCI list, as published by the brand.
Where to buy
What we've checked so far
We publish what we have while the assessment is still queued, and we're upfront about what's missing.
What we looked at
- Full INCI list, cross-checked against the brand's published formula.
- 90-day price history across 2 retailers, excluding shipping.
What we did not look at
- Our formula assessment — queued, not yet run.
- Shipping costs — not yet in all retailer feeds.
- Corol community reviews — none submitted yet.
What buyers say elsewhere
No external ratings indexed yet, and Corol community reviews haven't started.
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All 2 retailers
From €91.49 · Prices updated 2 days ago
° = over 3 days old