COSRX BHA Blackhead Power Liquid — a K-beauty alternative to Paula's Choice Skin Perfecting 2% BHA Liquid
Looking for a Korean alternative to Paula's Choice Skin Perfecting 2% BHA Liquid? Leave-on salicylic acid exfoliant
The K-beauty alternative
≈ BHA (salicylic / betaine salicylate) for pores — Both are leave-on BHA liquids that decongest oily pores and smooth bumpy texture. The Korean version uses a gentle BHA form well-liked for blackheads and breakout-prone skin.
Paula's Choice Skin Perfecting 2% BHA Liquid ($35–$42) vs the Korean pick — similar hero ingredients, a fraction of the price.
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What is BHA and what does it do?
BHA, usually salicylic acid, is an oil-soluble exfoliant that can penetrate pores to dissolve oil and dead skin, helping refine the look of texture and blemish-prone skin. In Korean routines it's used a few times weekly, with sunscreen by day, to avoid over-exfoliating.
What is the difference between AHA and BHA?
AHAs like glycolic and lactic acid are water-soluble and work on the skin's surface to brighten and smooth, while BHA like salicylic acid is oil-soluble and gets into pores. In Korean skincare both are used sparingly, a few times weekly, always with daily sun protection.
✍️ Written & reviewed by the KoreaPlus Editorial team — dermatologist-informed, cosmetic-science researched & source-cited. Last reviewed 2026-06-21.
General educational information using cosmetic structure-function wording — not medical advice. Always patch-test new actives. © KoreaPlus.