
About this product
A vitamin C serum from Kiehl's designed to reduce fine lines and brighten skin with their Powerful Strength formula.
Full ingredients
Guru Score
Mixed
Early verdict · Few reviews so farWhat they liked
What they flagged
Nothing. None of the experts who reviewed it raised a problem.
What the gurus are saying
This concentrate earns praise for being hydrating and enjoyable to use, though opinions split on how it stacks against other vitamin C options. One expert finds it genuinely pleasant to apply and appreciates the hydration, while another prefers alternatives. Not many gurus have weighed in yet, so there's not a broad sense of how it performs across different skin types.
Every take we've logged from this product's reviews across YouTube. Click any row to watch the moment they said it.
Independent of what the gurus think, this is what the published research supports about the main active ingredients here.
A vitamin C serum from Kiehl's designed to reduce fine lines and brighten skin with their Powerful Strength formula.
The gurus mostly approve it, but with enough reservations to keep it in the middle at a Guru Score of 68%.
Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate holds a Guru Score of 68%. That is our read on how warmly the experts talk about it, based on the verdicts of 2 expert reviewers we have collected.
Kiehl's Powerful Strength Vitamin C Line Reducing Concentrate is generally suited to mature skin.
Lower-priced serums the gurus still rate highly, versus this mid-range pick.
See how they stack up →Other products the same gurus have weighed in on, plus more from this brand and category.
Compare side by side →Stories where our editors dug into this product or its brand.
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