Quick answer: the closest match for the COSRX BHA Blackhead Power Liquid is The Ordinary AHA 30% + BHA 2% Peeling Solution: it shares Salicylic Acid, but not Niacinamide. Cheaper: Budget versus Mid-range for the original.
The contextWhy look for a BHA Blackhead Power Liquid dupe?
4% betaine salicylate — a gentler salicylic-acid equivalent derived from sugar beet — with niacinamide and willow bark water. Better tolerated than a straight 2% BHA, though effectively similar in function for surface blackheads and congestion.
A good dupe isn't about a matching label — it's about matching the hero actives, the ingredients carrying the real work. For this exfoliant that means Salicylic Acid, Niacinamide. The alternatives below are ranked by how many of those they match, then by price.
The matchesClosest alternatives
★ Closest match1 of 2
hero actives matched
BudgetSalicylic Acid
Why it works: Shares Salicylic Acid, but not the original's Niacinamide.
What's different: Cheaper: Budget versus Mid-range for the original. It also adds Glycolic Acid and Lactic Acid.
Full ingredient analysis → 1 of 2
hero actives matched
BudgetSalicylic Acid
Why it works: Shares Salicylic Acid, but not the original's Niacinamide.
What's different: Cheaper: Budget versus Mid-range for the original. It also adds Witch Hazel.
Full ingredient analysis →Common questions
What is the best dupe for the COSRX BHA Blackhead Power Liquid?
The closest match for the COSRX BHA Blackhead Power Liquid is The Ordinary AHA 30% + BHA 2% Peeling Solution: it shares Salicylic Acid, but not Niacinamide. Cheaper: Budget versus Mid-range for the original.
Are BHA Blackhead Power Liquid dupes really as good as the original?
A dupe matches the hero actives — the ingredients doing the measurable work — but rarely the full sensory experience. Texture, fragrance, supporting ingredients and exact concentrations differ, so treat a dupe as a value-led alternative rather than an identical copy.
How does Skin Stacker choose BHA Blackhead Power Liquid dupes?
We look at products in the same category (exfoliant) that share at least one of its hero actives (Salicylic Acid and Niacinamide), rank them by how many of its key treatment actives they match, then by price. Matches are based on published ingredient lists, not lab testing.
Compare them yourself
Head-to-headCompare this with…
Same-category picks that share at least one hero active — see ingredients, price and who each suits, side by side.
Showing the 6 closest of 7 comparisons.
Browse every comparison →Skin Stacker is independent and receives no payment from any brand. "Dupe" matches are based on publicly disclosed INCI lists and shared hero actives — not on side-by-side lab testing. A shared active profile does not guarantee an identical experience: texture, fragrance, supporting ingredients and concentrations all differ. Formulations change — always re-check the current label before buying.