Quick answer: the COSRX Low pH Good Morning Gel Cleanser comes closest to the La Roche-Posay Effaclar Medicated Gel Cleanser: it shares Salicylic Acid, but not Zinc PCA. On price, COSRX Low pH Good Morning Gel Cleanser is the cheaper of the two (Budget versus Mid-range). It also overlaps with 3 other products below.
Products the Low pH Good Morning Gel Cleanser matches
La Roche-Posay
1 of 3
hero actives matched
Pricier originalSalicylic Acid
Why it holds up: Shares Salicylic Acid, but not the original's Zinc PCA.
Full ingredient analysis →See them side by side →CeraVe
1 of 3
hero actives matched
Same price tierSalicylic Acid
Why it holds up: Shares Salicylic Acid, but not the original's Niacinamide.
Full ingredient analysis →See them side by side →Bioderma
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no hero actives to match
Pricier original
Why it holds up: The original doesn't list hero actives, so this is a same-category alternative rather than an ingredient match.
Full ingredient analysis →See them side by side →Cetaphil
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no hero actives to match
Same price tier
Why it holds up: The original doesn't list hero actives, so this is a same-category alternative rather than an ingredient match.
Full ingredient analysis →See them side by side →Common questions
Is the COSRX Low pH Good Morning Gel Cleanser a real dupe?
It shares hero actives with 4 same-category products in our catalogue, most closely the La Roche-Posay Effaclar Medicated Gel Cleanser (matching 1 of 3 of its hero actives). "Dupe" here means shared key ingredients, not an identical formula.
Does matching more hero actives make it better?
No. The match count only shows how many hero actives are shared. The base, supporting ingredients, texture and price still differ, so use the side-by-side comparison for the full picture.
Go deeper
Low pH Good Morning Gel Cleanser
Full ingredient breakdown for this product.
Open the analysis →Educational information only — not medical advice. Overlap reflects shared hero actives, not clinical equivalence.