Allergen & irritant analysis
3 flaggedThis facial treatment from La Roche-Posay lists 16 ingredients. AllerNote's analysis flags 1 known contact allergen and 2 common irritants in the INCI list. No added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates were detected in the listed ingredients.
- Sodium metabisulfiteKnown allergen (preservative): Sodium Metabisulfite
- Sodium hydroxideStrong alkaline substance that can be highly corrosive and irritating in high concentrations; used safely in cosmetics only in neutralized, low concentrations for pH adjustment.
- Potassium hydroxideHighly alkaline and corrosive in concentrated form; can cause burns and irritation if not properly diluted and neutralized. It is used in very small quantities to adjust pH.
Not detected: added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates.
Based on what's flagged, take extra care if you're among:
- People sensitised to preservatives (e.g. MI/MCI or formaldehyde releasers)
Generated from this product's ingredient list and AllerNote's allergen database — educational, not medical advice or a substitute for patch testing.
Benefits
Key Ingredients
- 1AntioxidantsShields skin from free radical damage.
- 2Vitamin EProtects skin and soothes irritation.
- 3Benzoyl PeroxideTargets acne-causing bacteria and clears breakouts.
- 4ExfoliatorsRemoves dead skin cells to smoothe texture.
Full Ingredient List
16INCI (full list, INCI order): active ingredients: benzoyl peroxide 5.5% inactive ingredients: water, glycerin, pentylene glycol, carbomer, silica, tocopheryl acetate, sodium citrate, sodium hydroxide, sodium metabisulfite, diethylhexyl sodium sulfosuccinate, phenoxyethanol, epilobium angustifolium flower/leaf/stem extract, propanediol, acrylates/c10-30 alkyl acrylate crosspolymer, disodium edta, potassium hydroxide
Tap any ingredient to see details
Potential Concerns
- May Worsen EczemaMay worsen itching or irritation for eczema.
- May Worsen RosaceaCan trigger flare-ups in rosacea-prone skin.
- May Worsen DrynessCan strip moisture and worsen dryness.
- May Worsen IrritationMay cause stinging, redness, or sensitivity.
Frequently asked questions
Is Effaclar BPO Multi-Target Acne Treatment fragrance-free?
No added fragrance or EU-labelled fragrance allergens were detected in Effaclar BPO Multi-Target Acne Treatment's listed ingredients. "Not detected" isn't an absolute guarantee, but it's a good sign for fragrance-sensitive skin — confirm against the current pack and your own triggers.
Is Effaclar BPO Multi-Target Acne Treatment paraben-free?
No parabens were detected in Effaclar BPO Multi-Target Acne Treatment's listed ingredients. Worth keeping in perspective: parabens are among the least common cosmetic allergens, so "paraben-free" matters far less for reactive skin than avoiding fragrance or the preservative MI/MCI.
Is Effaclar BPO Multi-Target Acne Treatment suitable for sensitive or allergy-prone skin?
It depends on your specific triggers. Effaclar BPO Multi-Target Acne Treatment contains 1 flagged allergen and 2 irritants (listed in the analysis above). If none are on your personal allergen list it may suit you, but patch test first — add your allergens to AllerNote to check Effaclar BPO Multi-Target Acne Treatment against your own profile.

