A "dupe" is a cheaper or easier-to-find product that delivers similar results to a pricier one — because what matters most is the active ingredients and formulation, not the brand or packaging.
What makes a real dupe
- The same key actives at meaningful concentrations (e.g. both are 10% niacinamide, or both are encapsulated retinol).
- A similar overall formula — humectants, occlusives, and texture in the same ballpark.
- Not just a similar claim on the box.
What doesn't make a dupe
Matching marketing language ("brightening," "anti-aging") tells you nothing. Two "brightening serums" can have completely different actives. Always compare the ingredient list.
Let a tool match the ingredients for you
Reading INCI lists side by side is tedious. SkinRegime's product pages include a "Similar products & dupes" section that ranks alternatives by how closely their active-ingredient and ingredient fingerprint matches — so you can find a cheaper option that genuinely performs. Browse the product catalogue and open any product to see its dupes.