SUPCASE · Waterproof Phone & Tech Cases
Universal Waterproof Phone Case for Samsung S25 S24
Skip; waterproof phone cases often use PFAS coatings, brand silent on chemistry.
Supcase does not disclose PFAS status or coating chemistry. Waterproof phone cases commonly use water-repellent coating treatments that may contain PFAS. No independent verification available.
The safe swap
Spigen Tough Armor
iPhone 17 Series Tough Armor T AI MagFit Case
85/100 safety
Same rubric that flunked this product. The swap earned its B.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
TPU/silicone blend with waterproof coating, unspecified
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
other is a category where PFAS exposure is more common.
Vague safety claims only
Uses vague language ("eco-friendly", "clean") without a specific PFAS statement.
The full breakdown
What it's made of and why it matters
Supcase uses a TPU (thermoplastic polyurethane) and silicone blend as the case body, with an unspecified waterproof coating to seal seams and surfaces. TPU itself is a relatively stable polymer with low leaching risk during normal phone contact. The risk centers on the waterproof topcoat: many brands in this category use PFAS-based water-repellent coating (water-repellent coating) finishes to achieve waterproofing, though Supcase has not disclosed their coating chemistry publicly. Without certification or material safety documentation, the coating composition remains unclear.
The brand's record and disclosure
Supcase is a mid-tier phone accessory manufacturer without published material safety data sheets, certifications (e.g., OEKO-TEX, BlueSign), or PFAS stance documentation for this product line. No safety recalls specific to chemical leaching or toxicity have been issued for Supcase phone cases on FDA or CPSC databases. The brand's silence on waterproof coating chemistry is typical for consumer phone cases but limits transparency compared to brands that voluntarily test for PFAS-free alternatives.
How it compares in its category
Universal waterproof phone cases occupy a broad market tier: budget options (including Supcase) rarely disclose coating ingredients, while premium alternatives (e.g., Lifeproof, OtterBox) sometimes publish PFAS-free certifications or water repellent technology details. Supcase is positioned as cost-effective and widely available; this design choice typically correlates with lower transparency on chemical inputs. Compared to uncoated TPU cases, waterproofing adds protection but introduces potential PFAS exposure via skin contact over months of use.
If you buy it
Wash your hands after extended contact, especially if the case is new (coating off-gassing is minimal but possible in first 1-2 weeks). Do not expose the case to heat above 50C (122F) or prolonged direct sunlight, as TPU can soften and the waterproof coating may degrade, potentially releasing particles or residual monomers. Inspect seams and the case surface every 3-6 months for cracks or peeling; discard if coating visibly flakes. If you are pregnant, nursing, or have children who will mouth the case, consider requesting material disclosure from Supcase first or choosing a brand with published PFAS-free certification.
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.”
Fluorinated water repellent coating (PFAS risk)
Unspecified waterproof coating is typical source of PFAS in phone cases. No test data available for this product; brand has not disclosed or excluded PFAS-based water-repellent coating chemistry. Skin contact and leaching into sweat/saliva are low but not zero over months of use.
TPU off-gassing and plasticizer leaching
TPU itself is recognized as lower-risk than PVC and does not typically contain high-migration plasticizers (phthalates). No off-gassing recalls on record for Supcase cases. Risk is minimal during normal use but increases with heat exposure.
Coating degradation and microparticle release
Waterproof coatings can flake or shed particulates if scratched, flexed repeatedly, or exposed to heat. Microscopic debris ingestion is unlikely but possible if case is placed directly in mouth or heavily handled by small children. Visual inspection helps identify peeling.
Allergic contact dermatitis from unknown additives
No dermatitis complaints on record for Supcase phone cases. TPU and silicone are hypoallergenic in most formulations, but additives in the waterproof coating (dyes, catalysts, UV absorbers) could trigger sensitivity in rare cases. Brand silence on full ingredient list limits predictability.
Lead or cadmium in pigments (if case is colored/opaque)
Not a known hazard in TPU phone cases. Heavy metal dyes are regulated in finished consumer goods in most markets, and Supcase cases are sold in regulated regions (US, EU). No recalls for heavy metals in this product category.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 35% 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 Waterproof Phone & Tech Cases
Spigen Tough Armor
iPhone 17 Series Tough Armor T AI MagFit Case
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No PFAS risk signals detected in this rigid plastic case.
⚠Brand says nothing about PFAS
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⚠Brand says nothing about PFAS
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⚠Brand says nothing about PFAS
More waterproof phone & tech cases 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.