Quick answer: the COSRX BHA Blackhead Power Liquid comes closest to the Paula's Choice 2% BHA Liquid Exfoliant: it has every key treatment active in it (Salicylic Acid). On price, COSRX BHA Blackhead Power Liquid is the cheaper of the two (Mid-range versus Premium). It also overlaps with 4 other products below.
Pricier picks the BHA Blackhead Power Liquid matches
Paula's Choice
1 of 2
hero actives matched
Pricier originalSalicylic Acid
Why it holds up: Matches every key treatment active in the original: Salicylic Acid.
Full ingredient analysis →See them side by side →Medicube
2 of 3
hero actives matched
Pricier originalSalicylic AcidNiacinamide
Why it holds up: Shares Salicylic Acid and Niacinamide, but not the original's Glycolic Acid.
Full ingredient analysis →See them side by side →Drunk Elephant
1 of 3
hero actives matched
Pricier originalSalicylic Acid
Why it holds up: Shares Salicylic Acid, but not the original's Glycolic Acid.
Full ingredient analysis →See them side by side →Glow Recipe
1 of 3
hero actives matched
Pricier originalSalicylic Acid
Why it holds up: Shares Salicylic Acid, but not the original's PHA.
Full ingredient analysis →See them side by side →Paula's Choice
1 of 3
hero actives matched
Pricier originalSalicylic Acid
Why it holds up: Shares Salicylic Acid, but not the original's Glycolic Acid.
Full ingredient analysis →See them side by side →Common questions
Is the COSRX BHA Blackhead Power Liquid a real dupe?
It shares hero actives with 5 same-category products in our catalogue, most closely the Paula's Choice 2% BHA Liquid Exfoliant (matching 1 of 2 of its hero actives). "Dupe" here means shared key ingredients, not an identical formula.
Does matching more hero actives make it better?
No. The match count only shows how many hero actives are shared. The base, supporting ingredients, texture and price still differ, so use the side-by-side comparison for the full picture.
Educational information only — not medical advice. Overlap reflects shared hero actives, not clinical equivalence.