Kiehl's · Sunscreen
Kiehl's Since 1851 Better Screen UV Serum Sunscreen SPF 50+
Lower PFAS concern for a liquid sunscreen serum; no waterproof finish or known PFAS triggers identified.
Kiehl's Better Screen UV Serum is a liquid sunscreen formulation without known PFAS-prone coatings or treatments. Sunscreen serums typically avoid water-repellency chemistries that introduce PFAS. No public PFAS claims or third-party verification exist, and no lab data is publicly available, leaving a modest information gap.
Shop Kiehl's on Amazon →Material
Water-based UV serum with mineral/organic UV filters
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Kiehl's Better Screen UV Serum combines mineral UV filters (likely zinc oxide or titanium dioxide) with organic/chemical filters in a water-based serum matrix. This hybrid approach is designed to reduce the white cast typical of all-mineral formulas while maintaining broad-spectrum protection. Water-based delivery means no silicone or volatile organic solvents, reducing inhalation and skin barrier disruption risks common in oil-based sunscreens.
The brand's record and disclosure
Kiehl's (owned by L'Oreal) does not publicly disclose PFAS testing or a formal PFAS avoidance commitment, though the product architecture (water-based, no waterproof claims) suggests minimal PFAS contamination risk. The brand has no major documented recalls or regulatory warnings specific to this sunscreen line. Kiehl's maintains ingredient transparency on its website but does not independently certify products for heavy metals or fragrance allergens.
How it compares in its category
This serum sits in the mid-premium segment, competing with brands like EltaMD and CeraVe Face Lotion SPF 50. Unlike many chemical-only sunscreens, the hybrid filter system reduces photostability concerns; unlike many mineral-only options, it avoids the occlusive feel. Water-based serums generally pose lower endocrine disruption and skin sensitization risk than oil-based formulas, though individual filter choice matters more than vehicle type.
If you buy it
Apply at least one-quarter teaspoon to face and neck; reapply every two hours or after water exposure. Store in a cool, dry place away from direct sunlight to prevent filter degradation and separation. Water-based formulas are stable at room temperature for 12-18 months once opened; discard if texture becomes grainy or separation is visible. Use daily year-round; no special precautions needed beyond standard sunscreen hygiene (avoid contact with eyes, rinse thoroughly with water).
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Fragrance allergens
Kiehl's formulas typically include fragrance; specific allergen content is not disclosed on product labeling. Water-based sunscreens are less occlusive than oils, reducing penetration depth, but sensitized individuals should patch-test on inner arm first.
Heavy metals in organic UV filters
No recalls or safety warnings for this product. Organic chemical filters (avobenzone, octocrylene, etc.) do not bioaccumulate heavy metals; mineral filters (zinc/titanium) are well-regulated cosmetic ingredients with established safety limits in the EU and FDA.
Photodegradation and filter instability
Hybrid formulas can suffer reduced efficacy if avobenzone or other organic filters degrade under UV or heat. This product is designed with stabilizers to minimize this, but storage in direct sunlight or heat will reduce SPF performance over time; integrity cannot be visually verified without laboratory testing.
Contact dermatitis from mineral particles
Fine zinc oxide or titanium dioxide in a serum can irritate sensitive or compromised skin barriers. Risk is lower than in powder sunscreens, but individuals with eczema or rosacea should introduce gradually and monitor for redness or stinging.
Contamination during product use
Water-based serums are less prone to bacterial growth than oil-based products if properly sealed. No product-specific contamination events are documented; standard cosmetic hygiene (avoid double-dipping, keep cap sealed) mitigates risk.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Sunscreen
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Lower-concern mineral sunscreen with credible PFAS-exclusion certification.
✓Verified PFAS-free by a third party
Raw Elements
Eco Formula SPF 30 Sunscreen
mineral sunscreen (zinc oxide, titanium dioxide)
Lower PFAS concern; mineral sunscreen with third-party verification and no known fluorochemical history.
✓Verified PFAS-free by a third party
Raw Elements
Face & Body Sunscreen Tin SPF 30
mineral sunscreen (zinc oxide/titanium dioxide), tin packaging
Lower-concern choice; mineral sunscreen + explicit PFAS-free positioning + third-party certs reduce risk.
✓Verified PFAS-free by a third party
More sunscreen grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.