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FAQ
What is the best dupe for cos.kim 0.5% Retinol Serum?+
The closest match in our database has a — ingredient overlap and saves shoppers around $0 per bottle.
Is the cos.kim 0.5% Retinol Serum dupe really worth it?+
Yes — when the ingredient match is above 70%, most shoppers report the dupe performs comparably to cos.kim 0.5% Retinol Serum at a fraction of the price.
How does Dupli find cos.kim 0.5% Retinol Serum dupes?+
Dupli compares full ingredient lists, key actives, and finish/feel claims across thousands of products to surface the best match.
Where can I scan cos.kim 0.5% Retinol Serum to find more dupes?+
Download Dupli on iPhone, scan the cos.kim 0.5% Retinol Serum barcode, and you'll see every matched dupe ranked by ingredient similarity.