COSRX Low pH vs. Etude SoonJung Cleanser
An active BHA exfoliant against a deliberately zero-active, fragrance-free minimal formula, at nearly identical price. Two opposite approaches to a second cleanse.
Criteria | COSRX Low pH Good Morning Gel Cleanser | Etude SoonJung pH 6.5 Whip Cleanser |
|---|---|---|
| Price | $14.00 | $15.00 |
| Price / unit | $0.09/mL | $0.10/mL |
| Size | 150 mL | 150 mL |
| Price checked | 9/12/2026 | 9/12/2026 |
Both are low-pH-adjacent, second-step cleansers priced almost identically, but they represent opposite ends of the formulation spectrum: one built around an active exfoliant, the other built to contain nothing active at all.
Why compare these two specifically
This is the real decision most people face choosing a second cleanse: an active exfoliating formula, or a completely inactive, minimal one. COSRX and Etude SoonJung sit at exactly those two poles at nearly the same price, which makes this a genuine formulation-philosophy comparison, not a price or brand-preference one.
Price per milliliter
COSRX runs $0.09 per milliliter ($14.00 for 150mL). Etude SoonJung runs $0.10 per milliliter ($15.00 for 150mL). Functionally identical, price isn't the deciding factor here.
Active exfoliant vs. zero-active formula
COSRX builds its formula around betaine salicylate (BHA) alongside tea tree leaf water, doing light exfoliation and cleansing in one daily step. Etude SoonJung has no active exfoliant at all: it's built around Panthensoside, Etude's own trademarked complex combining panthenol and madecassoside, alongside green tea extract and tocopherol, a deliberately minimal 14-ingredient formula marketed specifically for sensitive skin.
Fragrance is a second real difference
COSRX contains fragrance via its tea tree leaf water, a diluted hydrosol form, gentler than concentrated tea tree oil but still fragrance-bearing. Etude SoonJung is confirmed fragrance-free. For anyone specifically shopping for sensitive skin, that's arguably as relevant as the active-ingredient difference itself.
A real trade-off worth knowing on the gentler pick
Etude SoonJung's own product page flags this directly: the gentle, minimal formula means less deep-cleaning power against heavy makeup, and it's best paired with a proper oil cleanse as the first step rather than relied on alone. That's a genuine functional trade-off for the gentleness, not just a marketing footnote.
Our take
If you're oily or acne-prone and want light exfoliation built into your daily cleanse, COSRX is the more purposeful, active pick. If your skin is sensitive or reactive, or you want a fragrance-free, zero-active formula, Etude SoonJung is the safer default, just make sure it's paired with a real oil-cleanse first step if you're removing heavy makeup or sunscreen.
COSRX Low pH Good Morning Gel Cleanser: $0.09/mL. The active pick, built around betaine salicylate BHA for oily or acne-prone skin that wants light exfoliation in its daily cleanse.
Etude SoonJung pH 6.5 Whip Cleanser: $0.10/mL. The zero-active, fragrance-free pick, built for sensitive skin, though best paired with a proper oil-cleanse first step for heavy makeup.
For the double-cleanse method and what low pH actually means, see how to double cleanse, or browse the rest of our cleanser coverage.
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Price checked 9/12/2026
Price checked 9/12/2026
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Frequently asked
Which is better for oily or acne-prone skin, COSRX Low pH or Etude SoonJung?
COSRX, since it's built around betaine salicylate (BHA) for light exfoliation. Etude SoonJung has no active exfoliant at all.
Which is better for sensitive skin, COSRX Low pH or Etude SoonJung?
Etude SoonJung, a deliberately minimal, fragrance-free formula with no active exfoliant, built specifically for sensitive skin. Pair it with a proper oil cleanse first for heavy makeup, since its gentleness trades off some deep-cleaning power.
Are COSRX Low pH and Etude SoonJung fragrance-free?
No. COSRX contains fragrance via a diluted tea tree leaf water hydrosol. Etude SoonJung is confirmed fragrance-free.