Ghostek · Waterproof Smartphone Cases
Ghostek Nautical Slim Waterproof Case for Apple iPhone 15
Waterproof case; coating formulation undisclosed. Consider contacting Ghostek.
Ghostek does not disclose the waterproof treatment chemistry on this iPhone case. Waterproof coatings commonly use PFAS, but brand silence prevents confirmation.
The safe swap
Mophie
Mophie Juice Pack Battery Case for iPhone 15
85/100 safety
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Polycarbonate/thermoplastic 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.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
This case is constructed from polycarbonate, a rigid plastic polymer commonly used in phone protection because of its impact resistance and clarity. The waterproof seal is achieved via an unspecified coating applied to the polycarbonate shell. Since Ghostek does not publicly disclose the chemical composition of this waterproof layer, it cannot be verified whether it contains PFAS (PFAS "forever chemicals"), which are common in water-repellent treatments but carry bioaccumulation concerns. Polycarbonate itself can leach trace amounts of BPA under stress or heat, though modern formulations in consumer electronics typically minimize this risk.
The brand's record and disclosure
Ghostek has not published transparency statements regarding PFAS use, material sourcing, or chemical safety testing for this product line. The company does not appear to hold third-party certifications (such as OEKO-TEX or bluesign) that would independently verify chemical safety. No major recalls or documented safety incidents specific to Ghostek phone cases have been widely reported, but the lack of proactive disclosure is a gap relative to brands that voluntarily test for and communicate about coating chemistries.
How it compares in its category
Most durable phone cases rely on either untreated thermoplastic elastomer (TPE), polyurethane, or polycarbonate with proprietary waterproof coatings. Ghostek's approach is typical of mid-market brands offering waterproofing; however, competitors like OtterBox and some eco-conscious brands (e.g., Pela) disclose coating ingredients or commit to PFAS-free formulations. This case sits in the standard-to-cautious zone: it prioritizes durability and water protection over radical chemical transparency.
If you buy it
Avoid exposing the case to sustained heat (above 50C/122F) to reduce any risk of leaching from the polycarbonate or coating. Do not store it in direct sunlight for extended periods, as UV and heat can degrade the protective coating and increase surface wear over time. Wash with cool water and mild soap if needed; dry thoroughly before sealing the case around the phone. Replace the case if the waterproof seal visibly cracks, peels, or lifts, as compromised coating cannot reliably protect against water and may shed microparticles.
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.”
BPA leaching from polycarbonate
Polycarbonate can release trace BPA when exposed to heat, scratches, or acidic conditions. Risk is low in typical room-temperature use but increases if the case is left in hot environments (car interiors, direct sun). Direct skin contact minimizes ingestion risk, but hand-to-mouth transfer is possible.
Unidentified waterproof coating composition
Ghostek does not disclose the chemistry of its waterproof layer. PFAS compounds are common in such coatings and can migrate into skin oils or water in contact with the case. Without ingredient transparency, exposure level cannot be assessed; contacting the manufacturer for coating details is advisable.
Microplastics from coating degradation
As the waterproof coating ages and flakes due to flexing, UV exposure, or friction, microplastics may shed from the case surface. These particles could settle on skin, clothing, or be ingested if present on hands before eating.
Phthalates in thermoplastic components
Modern polycarbonate phone cases rarely contain phthalate plasticizers, as manufacturers have largely phased them out. No reports of phthalate contamination in Ghostek cases are on record, but formulation details are not publicly available.
Volatile organic compounds (VOCs) from adhesives or sealants
The bonding between the polycarbonate shell and waterproof coating may involve adhesives or curing agents that off-gas VOCs, particularly when new. Odor may fade within days to weeks. Ventilation during initial use and storage away from food can minimize exposure.
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 Smartphone Cases
Mophie
Juice Pack Battery Case for iPhone 15
Lithium-ion battery, plastic housing, metal contacts
No known PFAS use; battery cases rarely require fluorinated coatings.
⚠Brand says nothing about PFAS
Mophie
Juice Pack Battery Case for iPhone 15 Pro
Lithium-ion battery, plastic housing, rubber grips
Lower concern. Battery cases lack typical PFAS-prone coatings; no public disclosure available.
⚠Brand says nothing about PFAS
Pelican
Shield Phone Case for Samsung Galaxy S24 Plus
Polycarbonate shell, rubber grip
Lower concern; typical phone case with no known PFAS applications.
⚠Brand says nothing about PFAS
More waterproof smartphone 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.