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COSRX upgrades the cult BHA Liquid โ same hero salicylic, now with cica and panthenol so even congestion-prone-but-sensitive skin can finally use it daily.
Other routine steps with complementary ingredients.
Side-by-side ingredient breakdowns vs. the closest alternatives.
In-clinic and at-home treatments that use the same active ingredients.

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Korea's most popular clinic facial โ a multi-step machine treatment that simultaneously exfoliates, extracts, and infuses skin with customized serums using a patented vortex technology.

The medispa workhorse โ cleanse + exfoliate + extract + infuse in one vacuum-tipped wand.
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BHA Power 4D Liquid by COSRX is formulated for oily, combination, acne-prone skin. COSRX upgrades the cult BHA Liquid โ same hero salicylic, now with cica and panthenol so even congestion-prone-but-sensitive skin can finally use it daily.
The key active ingredients in BHA Power 4D Liquid are Centella Asiatica, Niacinamide, Salicylic Acid. It's known for: BHA + cica combo softens irritation curve and COSRX BHA pedigree.
Yes, BHA Power 4D Liquid targets acne, pores, oiliness. BHA + cica combo softens irritation curve
BHA Power 4D Liquid retails for around $24, which places it in the mid range for exfoliants. Check the "Where to Buy" section above for current retailer prices.
The main drawbacks to be aware of: still BHA โ pregnancy-not-friendly; slow visible decongestion vs. immediate.
A suggested daily routine featuring this product, with complementary picks.
Pure Fit Cica Smoothing Cleansing Balm
COSRX ยท cleanser
BHA Power 4D Liquid
COSRX ยท exfoliant
Advanced Snail Radiance Dual Essence
COSRX ยท essence
One Step Original Clear Pad
COSRX ยท exfoliant
Advanced Snail 92 All in One Cream
COSRX ยท moisturizer
Aloe Soothing Sun Cream SPF50+ PA+++
COSRX ยท sunscreen
Advanced Snail 92 All in One Cream
COSRX ยท moisturizer