Allergen & irritant analysis
1 flaggedThis serum from Kiehl's lists 7 ingredients. AllerNote's analysis flags 1 known contact allergen in the INCI list. No added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates were detected in the listed ingredients.
- PhenoxyethanolKnown allergen (irritant): Phenoxyethanol
Not detected: added fragrance, parabens, MI / MCI (isothiazolinones), formaldehyde-releasing preservatives, SLS / SLES sulfates.
How common are allergens in serums? See our data on the whole category →
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
- 1Hyaluronic AcidHydrates by attracting and holding water.
Full Ingredient List
7INCI (full list, INCI order): water, glycerin, sodium hyaluronate, phenoxyethanol, chlorphenesin, tetrasodium glutamate diacetate, citric acid
Tap any ingredient to see details
Potential Concerns
- May Worsen RosaceaCan trigger flare-ups in rosacea-prone skin.
Frequently asked questions
Is Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum fragrance-free?
No added fragrance or EU-labelled fragrance allergens were detected in Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum'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 Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum paraben-free?
No parabens were detected in Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum'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 Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum suitable for sensitive or allergy-prone skin?
It depends on your specific triggers. Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum contains 1 flagged allergen and 0 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 Ultra Pure High-Potency 1.5% Hyaluronic Acid Serum against your own profile.