Allergen & irritant analysis
1 flaggedThis facial treatment from Neutrogena lists 8 ingredients. AllerNote's analysis flags 1 common irritant in the INCI list. No added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates were detected in the listed ingredients.
- 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.
Not detected: added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates.
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
- 1Benzoyl PeroxideTargets acne-causing bacteria and clears breakouts.
Full Ingredient List
8INCI (full list, INCI order): active ingredients: benzoyl peroxide 2.5% inactive ingredients: water, carbomer, ethylhexylglycerin, sodium hydroxide, chlorphenesin, disodium edta, laureth-4, hydroxypropyl methylcellulose
Tap any ingredient to see details
Potential Concerns
- May Trigger AcneCan clog pores or trigger breakouts.
- May Worsen DrynessCan strip moisture and worsen dryness.
- May Worsen EczemaMay worsen itching or irritation for eczema.
- May Worsen IrritationMay cause stinging, redness, or sensitivity.
- May Worsen Oily SkinMay increase shine or excess oil.
- May Worsen RosaceaCan trigger flare-ups in rosacea-prone skin.
Frequently asked questions
Is On-the-Spot Acne Treatment fragrance-free?
No added fragrance or EU-labelled fragrance allergens were detected in On-the-Spot 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 On-the-Spot Acne Treatment paraben-free?
No parabens were detected in On-the-Spot 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 On-the-Spot Acne Treatment suitable for sensitive or allergy-prone skin?
It depends on your specific triggers. On-the-Spot Acne Treatment contains 0 flagged allergens and 1 irritant (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 On-the-Spot Acne Treatment against your own profile.

