Side-by-side comparison

COSRX Low pH Good Morning Gel Cleanser vs La Roche-Posay Effaclar Medicated Gel Cleanser

Both are cleansers. They share a 64% active-ingredient overlap, so the real decision is about price, texture and the supporting ingredients. Here's the side-by-side.

64%Active overlap
COSRX
Low pH Good Morning Gel Cleanser
CleanserBudgetMorning or evening
SensitivityCongestionOiliness

A low-pH gel cleanser with a touch of BHA and tea tree oil. Gentle enough for daily use, it respects the acid mantle while lightly decongesting — a long-running favourite for those transitioning off high-pH foaming washes.

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La Roche-Posay
Effaclar Medicated Gel Cleanser
CleanserMid-rangeMorning or evening
OilinessAcneCongestion

A foaming salicylic acid (2%) gel cleanser for oily, acne-prone skin. Effective at cutting oil and clearing pores, but the BHA-plus-foaming combination can be drying — best paired with a good moisturiser.

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The verdict

Which should you choose?

On price, the COSRX Low pH Good Morning Gel Cleanser sits in the Budget tier versus Mid-range for the La Roche-Posay — so it's the more budget-led pick if the overlap is what you're after. The COSRX leans toward Sensitivity. The La Roche-Posay leans toward Acne.

The overlap

What they share

At 64% active overlap, these are the ingredients doing comparable work in both formulas:

Salicylic Acid
The formulation

Ingredient stacks, side by side

COSRX — top of the list

  • Aqua~50–80%
  • Cocamidopropyl …~5–25%
  • Sodium Lauroyl …~3–10%
  • Sodium Cocoyl I…~2–6%
  • Polysorbate 20~1.5–4%

La Roche-Posay — top of the list

  • Aqua~50–80%
  • Sodium Laureth …~5–25%
  • Cocamidopropyl …~3–10%
  • Salicylic Acid~2–6%
  • Zinc PCA~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

COSRXLa Roche-Posay
CategoryCleanserCleanser
Price tierBudgetMid-range
Best forSensitivity, Congestion, OilinessOiliness, Acne, Congestion
Usage notesMorning or eveningMorning or evening
Active overlap64% — Salicylic Acid
Questions

Common questions

Is the COSRX Low pH Good Morning Gel Cleanser or the La Roche-Posay Effaclar Medicated Gel Cleanser better?
Neither is universally better — they share 64% active-ingredient overlap, so for the actives that drive results they're close. The COSRX Low pH Good Morning Gel Cleanser 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 Low pH Good Morning Gel Cleanser and the La Roche-Posay Effaclar Medicated Gel Cleanser?
Both are cleansers that share Salicylic Acid. Where they differ: they sit in different price tiers (Budget vs Mid-range); the COSRX targets Sensitivity; the La Roche-Posay targets Acne.
Are the COSRX Low pH Good Morning Gel Cleanser and La Roche-Posay Effaclar Medicated Gel Cleanser dupes for each other?
They share 64% 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 Low pH Good Morning Gel Cleanser and La Roche-Posay Effaclar Medicated Gel Cleanser together?
They both fill the cleanser 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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66% overlap

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