Side-by-side comparison

COSRX BHA Blackhead Power Liquid vs The Ordinary Salicylic Acid 2% Solution

Both are exfoliants. They share a 70% active-ingredient overlap, so the real decision is about price, texture and the supporting ingredients. Here's the side-by-side.

70%Active overlap
COSRX
ExfoliantMid-rangeEvening only
AcneRough TextureOilinessSensitive skinDamaged barrier

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.

The Ordinary
ExfoliantBudgetEvening only
CongestionOilinessAcne

A straightforward 2% BHA in a lightweight watery base with a little witch hazel. Effective pore and blackhead exfoliation at a rock-bottom price; the simple base means less of the soothing buffer found in pricier BHAs.

The verdict

Which should you choose?

On price, the The Ordinary Salicylic Acid 2% Solution sits in the Budget tier versus Mid-range for the COSRX — so it's the more budget-led pick if the overlap is what you're after. The COSRX leans toward Rough Texture. The The Ordinary leans toward Congestion.

The overlap

What they share

At 70% active overlap, these are the ingredients doing comparable work in both formulas:

The formulation

Ingredient stacks, side by side

COSRX — top of the list

  • Water~50–80%
  • Betaine Salicy…4%
  • Butylene Glycol~3–10%
  • Niacinamide~2–6%
  • 1,2-Hexanediol~1.5–4%

The Ordinary — top of the list

  • Aqua~50–80%
  • Salicylic Acid~5–25%
  • Hamamelis Virgi…~3–10%
  • Propanediol~2–6%
  • Glycerin~1.5–4%

● marks ingredients that appear near the top of both lists. Percentages are positional estimates from INCI order, not disclosed doses.

At a glance

The specs

COSRXThe Ordinary
CategoryExfoliantExfoliant
Price tierMid-rangeBudget
Best forAcne, Rough Texture, OilinessCongestion, Oiliness, Acne
Usage notesEvening onlyEvening only
Active overlap70% — Salicylic Acid
Questions

Common questions

Is the COSRX BHA Blackhead Power Liquid or the The Ordinary Salicylic Acid 2% Solution better?
Neither is universally better — they share 70% active-ingredient overlap, so for the actives that drive results they're close. The The Ordinary Salicylic Acid 2% Solution is the more budget-friendly option, while the other may differ on texture, finish and supporting ingredients. Pick based on your skin's priorities rather than a single 'winner'.
What's the difference between the COSRX BHA Blackhead Power Liquid and the The Ordinary Salicylic Acid 2% Solution?
Both are exfoliants that share Salicylic Acid. Where they differ: they sit in different price tiers (Mid-range vs Budget); the COSRX targets Rough Texture; the The Ordinary targets Congestion.
Are the COSRX BHA Blackhead Power Liquid and The Ordinary Salicylic Acid 2% Solution dupes for each other?
They share 70% active-ingredient overlap based on published INCI lists, so one can stand in for the other on the actives that matter — chiefly Salicylic Acid. A dupe matches the hero actives, not the full sensory experience, so expect differences in texture, fragrance and exact concentrations.
Can I use the COSRX BHA Blackhead Power Liquid and The Ordinary Salicylic Acid 2% Solution together?
They both fill the exfoliant slot in a routine, so you'd normally pick one rather than layer both. If you want to use both, treat one as your daytime option and the other for evening, and patch-test when introducing anything new.
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