++++
[ DemythSkin Verdict ]
La Roche-Posay Effaclar Duo(+) SPF 30
MoisturizerSun Protection
Efficacy
Strong
4.0 / 5.0
Safety
Caution
3.5 / 5.0
System Verdict
Effective acne-prone daytime moisturizer, but the alcohol-fragrance-sunscreen base makes it a compromise formula. The efficacy score lands at 4.0 because the formula does have real acne-supporting actives in useful positions—niacinamide, zinc PCA, capryloyl salicylic acid, and salicylic acid—but much of the “treatment” value is diluted by its sunscreen/makeup-like base, and the likely low, rinse-resilient impact of some actives is offset by denatured alcohol plus fragrance irritation risk.
Active Ingredients Detected
S Tier: Gold StandardsHigh Clinical Proof | Skin-Transformative
Salicylic Acid
A Tier: Good BasicsProven Results
Aqua/WaterGlycerinHomosalateEthylhexyl SalicylateNiacinamideButyl MethoxydibenzoylmethaneDimethiconeDimethicone/Vinyl Dimethicone CrosspolymerCapryloyl Salicylic Acid
B Tier: Supporting IngredientsPromising Ingredients
OctocryleneSorbitan StearateSilicaIsopropyl Lauroyl SarcosinateStyrene/Acrylates CopolymerPropylene GlycolPotassium Cetyl PhosphateDisopropyl SebacatePEG-20PEG-8 LaurateZinc PCA2-Oleamido-1,3-OctadecanediolInulin Lauryl CarbamateCarnosinePoloxamer 338Ammonium Polyacryloyldimethyl TaurateDisodium EDTASucrose CocoateXanthan GumBHT
D Tier: Potential IrritantsBe Cautious
Alcohol Denatt-Butyl AlcoholParfum/Fragrance
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DemythSkin is an independent ingredient analyzer. Scores are computed by a deterministic rubric from published clinical evidence — no brand pays for a score.