What the brand claims
In the brand’s own words, quoted as written.
“This skin-strengthening serum is formulated with 11kDa hyaluronic acid, the smallest molecular form, to penetrate up to eight surface layers of the skin and help fortify barrier function. It supports skin resilience, improves the appearance of fine lines, and enhances moisture retention for a bouncier, more radiant complexion, with clinical feedback showing 87% of users felt their skin was bouncier and 85% reported firmer, softer, and more hydrated 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.
Ingredients38 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.
Corol community reviews open here — be the first.
All 2 retailers
From €61.99 · Prices updated 2 days ago
° = over 3 days old