Side-by-side comparison

COSRX Centella Blemish Cream vs La Roche-Posay Effaclar Duo+

Both treatments contain Niacinamide, but each adds something the other doesn't. Here's where they overlap and where they split.

1Shared hero active
COSRX
Centella Blemish Cream
TreatmentMid-rangeMorning or evening
RednessAcnesensitive

A lightweight cream with centella, niacinamide and zinc oxide for redness and post-blemish healing. Mildly mattifying — works as a thin all-over layer on congested skin or as a spot treatment on active breakouts.

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La Roche-Posay
Effaclar Duo+
TreatmentMid-rangeMorning or evening
AcneOilinessRough TextureSensitive skin

A targeted anti-blemish moisturiser with niacinamide, salicylic acid, piroctone olamine and LHA (a gentler BHA derivative). Effective as a spot treatment or thin all-over layer for acne-prone skin.

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The verdict

Which should you choose?

Both contain Niacinamide. La Roche-Posay Effaclar Duo+ adds Salicylic Acid. Pick the one whose extra matches what you're treating. COSRX Centella Blemish Cream is the better fit for redness and sensitive skin; La Roche-Posay Effaclar Duo+ for oiliness and rough texture. Both sit in the Mid-range price tier.

The overlap

What they share

This hero active appears in both formulas:

Niacinamide
The formulation

Ingredient stacks, side by side

COSRX Centella Blemish Cream — top of the list

  • Water~50–80%
  • Zinc Oxide~5–25%
  • Centella Asiat…~3–10%
  • Niacinamide~2–6%
  • Caprylic/Capri…~1.5–4%
  • Butylene Glycol~1–2%
  • Glycerin~1–2%
  • Propanediol~1–2%
  • Centella Asiat…~1–2%

La Roche-Posay Effaclar Duo+ — top of the list

  • Aqua / Water~50–80%
  • Glycerin~5–25%
  • Isononyl Isono…~3–10%
  • Zinc PCA~2–6%
  • Niacinamide~1.5–4%
  • Capryloyl Sali…~1–2%
  • Propylene Glycol~1–2%

● 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

COSRX Centella Blemish CreamLa Roche-Posay Effaclar Duo+
CategoryTreatmentTreatment
Price tierMid-rangeMid-range
Best forRedness, Acne, sensitiveAcne, Oiliness, Rough Texture
Usage notesMorning or eveningMorning or evening
Shared hero activesNiacinamide
Questions

Common questions

Is the COSRX Centella Blemish Cream or the La Roche-Posay Effaclar Duo+ better?
It depends on what you're treating. Both contain Niacinamide; La Roche-Posay Effaclar Duo+ adds Salicylic Acid.
What's the difference between the COSRX Centella Blemish Cream and the La Roche-Posay Effaclar Duo+?
COSRX Centella Blemish Cream's hero actives are Centella Asiatica and Niacinamide. La Roche-Posay Effaclar Duo+'s are Niacinamide and Salicylic Acid.
Are the COSRX Centella Blemish Cream and La Roche-Posay Effaclar Duo+ dupes for each other?
Partly. They share Niacinamide, but La Roche-Posay Effaclar Duo+'s Salicylic Acid isn't in the other, so they aren't full substitutes.
Can I use the COSRX Centella Blemish Cream and La Roche-Posay Effaclar Duo+ together?
Usually, yes. Apply the thinner texture first, then the thicker one, and patch-test when introducing anything new.
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2 shared hero actives

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