COSRX Low pH Niacinamide Micellar Cleansing Water

What is this product?

COSRX's Low pH Niacinamide Micellar Cleansing Water is a gentle 400ml first wipe for light soil, and its whole case is how little is in it: 16 ingredients, one nonionic surfactant, 폴리글리세릴-4카프레이트, at position 3, with 판테놀, 알란토인 and 마데카소사이드 for soothing, 나이아신아마이드 at 7 and 징크피씨에이 at 8. No fragrance, no drying alcohol and no oil phase, which also means it will not take off heavy or waterproof makeup. COSRX states it is not a functional cosmetic and publishes no pH, no ingredient amounts and no test of any kind, because its selling copy sits inside page images rather than in text.

What makes it different?

Three things set it apart. One surfactant and no oil phase put it at the gentle, low-removal end of the cleansing-water range rather than with the biphasic and oil-carrying waters that dissolve makeup. The 약산성 in its name is real rather than nominal, built on a 소듐시트레이트 and 시트릭애씨드 buffer pair at positions 14 and 15, and buyers read it that way, with 약산성 itself showing up 265 times in the positive comments as of 2026-08-27. The thin part is the evidence: COSRX gives no pH figure, no amounts and no test type, panel size, institution or date, so everything said about how it performs is reasoning from the printed 전성분 rather than measurement.

What is in it?

The full ingredient list as the brand publishes it, in the printed order. Each name links to what we know about that ingredient.

This brand publishes its ingredient list in Korean only. Names below are the matching INCI names from the Korean Cosmetic Association ingredient dictionary.

Key ingredient

• Water
• Dipropylene Glycol
• Polyglyceryl-4 Caprate
• Panthenol
• Sodium Hyaluronate
• Allantoin
• Niacinamide
• Zinc PCA
• Madecassoside
• Propanediol
• Caprylyl Glycol
• Ethylhexylglycerin
• 1,2-Hexanediol
• Sodium Citrate
• Citric Acid
• Disodium EDTA

Ingredients with no mark are ones we found nothing notable about, and when marks overlap on one ingredient we show the caution first.

Did the ad claims hold up?

We checked 3 lines this product advertises against the ingredient list and public documents. One of them holds up. The rest are only partly right or have nothing behind them.

Claims translated from Korean, originals preserved.

Each line is quoted as the brand published it, and each one was read on its own against the ingredient list and the documents the brand publishes.

How we read these lines

Which articles cover it?

Articles on this site that write about this product.

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