PFAS in Shoe Waterproofing Sprays, Which Brands Grade Best and Worst

Based on available materials and data, the Nikwax lineup consistently grades best among shoe waterproofing sprays we reviewed, each landing at a Good rating with a model-based estimate of 65 out of 100, while nearly every other mainstream aerosol brand we checked, including Crep Protect, Jason Markk, Kiwi's aerosol lines, and Scotchgard's suede protector, grades Poor at an estimated 40 out of 100. This is not a lab-verified ranking of every bottle on shelves, it is a comparative read of disclosed ingredients, formulation type, and public safety data across the products in our database.

The short version, before you dig into the details below, water-based, non-aerosol formulas from Nikwax are the better-graded choice for people trying to reduce PFAS exposure from shoe sprays, based on our model's reading of their disclosed materials. Aerosol-propelled sprays from Crep Protect, Jason Markk, Kiwi, and Scotchgard's suede line carry our Poor grade, reflecting a combination of fluoropolymer-adjacent propellant chemistry and thinner public ingredient disclosure. None of this is a clinical safety guarantee for any product, and no product on this list has been independently lab-confirmed as PFAS-free by a third party in the data we reviewed. Treat every grade as a snapshot built from what brands publish and what our model can infer, not a certified test result.

Summary comparison table

Product	PFAS grade	Verdict
Nikwax Fabric & Leather Proof Spray	Good (65/100)	Lower concern, water-based formula, our top pick for general use
Nikwax Fabric & Leather Duo-Pack	Good (65/100)	Lower concern, cleaner plus proofer combo
Nikwax TX-Direct Spray-On	Good (65/100)	Lower concern, built for technical outerwear and boots
Nikwax Nubuck & Suede Waterproofing Spray	Good (65/100)	Lower concern, suede-specific option
Nikwax Waterproofing Spray	Good (65/100)	Lower concern, general-purpose formula
Nikwax Nubuck & Suede Proof Spray	Good (65/100)	Lower concern, close sibling to the above
Jason Markk Shoe Care Repel Spray	Poor (40/100)	Higher concern, aerosol, thin disclosure
Crep Protect Spray	Poor (40/100)	Higher concern, aerosol repellent
Crep Protect Shoe Protector Spray	Poor (40/100)	Higher concern, same formula family as above
Crep Protect Starter Pack	Poor (40/100)	Higher concern, bundle includes the same spray
Kiwi Protect All Waterproofer Spray	Poor (40/100)	Higher concern, legacy aerosol formula
Kiwi 70415 Boot Protector	Poor (40/100)	Higher concern, boot-focused aerosol
Scotchgard Suede & Nubuck Protector	Poor (40/100)	Higher concern, fluorochemical heritage brand

How we think about these grades

Every grade here is a model-based estimate built from reviewed materials, brand disclosures, and public ingredient data, not a laboratory test of the specific bottle sitting on a shelf. A Good grade signals lower estimated concern relative to other products in the same category, it does not mean a product is "PFAS-free" or certified safe. A Poor grade means our model found more signals associated with PFAS-type chemistry or less disclosure to work from, which lowers confidence rather than confirming contamination. Where a brand makes its own claim about being fluorocarbon-free, we note that as a brand statement, not an independently verified result, unless we have third-party lab data to point to, which we do not for the products below.

Nikwax, the Good-graded lineup

Nikwax dominates the better end of our table with six separate listings, all landing at Good with an estimated 65 out of 100.

Nikwax Fabric & Leather Proof Spray

Materials and brand claims, Nikwax markets this as a water-based, pump-spray waterproofing treatment for fabric and leather footwear, and the brand has long stated its formulas avoid fluorocarbons. That is a brand claim, and based on available materials and data reviewed for this guide, we have not found independent lab verification confirming total absence of PFAS compounds in this specific product.

Pros, Non-aerosol pump delivery, works on both fabric and leather, widely available, consistent grading across the Nikwax product family suggests a stable formulation approach.

Cons, Pump sprays require more manual effort and even coverage than aerosols, and the Good grade is still not a "zero PFAS" guarantee. See the product page for details.

Nikwax Fabric & Leather Duo-Pack

Materials and brand claims, Bundles a cleaner with the proofing spray, same water-based positioning as the standalone spray. Brand claims on fluorocarbon-free formulation apply here as well, unverified by third-party lab data in the sources we reviewed.

Pros, Two-step clean-then-proof routine can improve longevity of the water-repellent finish, good value if you need both products anyway.

Cons, Higher upfront cost than buying the proofer alone, same disclosure limitations as the rest of the line. Details at the Duo-Pack listing.

Nikwax TX-Direct Spray-On

Materials and brand claims, Positioned for technical outerwear and performance footwear, TX-Direct is Nikwax's more "technical" line, with the same water-based, non-aerosol delivery and brand statements around avoiding fluorocarbon chemistry.

Pros, Popular with hikers and trail runners, reapplication is straightforward, grading is consistent with the rest of the Nikwax range.

Cons, Marketed more toward technical gear than fashion sneakers, so fit for casual shoes varies. See the TX-Direct page.

Nikwax Nubuck & Suede Waterproofing Spray and Nubuck & Suede Proof Spray

Materials and brand claims, Two closely related suede-specific formulas, both water-based, both marketed as fluorocarbon-free by the brand. Both carry the same Good grade and 65/100 estimate.

Pros, Formulated specifically to avoid darkening or matting suede and nubuck textures, which generic sprays sometimes damage.

Cons, Suede-specific formulas are not ideal for mixed-material sneakers, and again, our grade reflects model estimates, not an independent lab certificate. Compare both at this listing and this one.

Nikwax Waterproofing Spray

Materials and brand claims, The general-purpose entry in the lineup, same water-based pump format, same brand-stated fluorocarbon-free positioning.

Pros, Broad fabric and leather compatibility, easy to find at outdoor retailers.

Cons, As with the rest of the range, treat "fluorocarbon-free" as a brand claim pending independent verification. Full details at the product page.

The Poor-graded aerosol sprays

Every product below carries our Poor grade at an estimated 40 out of 100, reflecting a combination of aerosol propellant chemistry, less transparent ingredient disclosure, and formulation signals our model associates with higher PFAS-type concern. A Poor grade is a flag to look closer, not a confirmed contamination finding.

Jason Markk Shoe Care Repel Spray

Materials and brand claims, An aerosol repellent spray marketed heavily within the sneaker-care and sneakerhead community, positioned as a quick-apply protectant for fabric sneakers.

Pros, Fast drying, easy aerosol application, strong brand recognition among sneaker collectors.

Cons, Aerosol delivery format and limited public ingredient disclosure contribute to the Poor grade here, based on available materials and data. No independent lab data confirming PFAS-free status was found in the sources reviewed for this guide. See the product page for more.

Crep Protect Spray, Shoe Protector Spray, and Starter Pack

Materials and brand claims, Crep Protect's core aerosol formula appears across three separate listings in our database, its standalone spray, its shoe protector spray, and its starter pack bundle. All three share the same underlying formula and the same Poor grade.

Pros, Extremely popular in sneaker culture, fast aerosol application, widely stocked.

Cons, The repeated appearance of the same formula across three SKUs means the same disclosure and formulation concerns apply three times over. Our model finds no basis in reviewed materials to call this line lower concern. Compare the standalone spray, the protector spray, and the starter pack.

Kiwi Protect All Waterproofer Spray and Kiwi 70415 Boot Protector

Materials and brand claims, Kiwi's aerosol protector lines are legacy shoe-care staples, marketed for broad use across leather, suede, and fabric footwear and boots.

Pros, Long shelf history, low price point, easy to find in grocery and department stores.

Cons, Both carry our Poor grade, and legacy aerosol formulas in this category have historically relied on fluorochemical repellents, which is part of why disclosure quality and formulation signals pull the estimate down. See Protect All Waterproofer and Boot Protector for specifics. Kiwi's better-graded entry in our database is actually a Nikwax-made formula sold under its name, which is worth noting when comparing listings.

Scotchgard Suede & Nubuck Protector

Materials and brand claims, Scotchgard is one of the original fluorochemical protector brands, and its suede and nubuck aerosol formula is marketed for delicate footwear materials.

Pros, Strong historical performance reputation for suede protection, specifically formulated to avoid staining delicate textures.

Cons, The 3M fluorochemical heritage behind the Scotchgard name is part of why this product lands at Poor in our model, reflecting formulation and disclosure signals rather than a confirmed PFAS measurement. Full listing at the product page.

What to avoid

• Aerosol cans with no ingredient list on the label. If a spray can only lists "active ingredients, proprietary repellent blend," that is a disclosure gap, not a safety claim either way.
• Marketing language like "fluorocarbon-free" with no backing data. Treat it as a brand statement until you see a named testing lab or standard behind it.
• Products that only ever appear in aerosol format across a brand's entire lineup. Several brands on the Poor side of our table, including Crep Protect and Kiwi's legacy line, offer no water-based alternative in our database, which limits lower-concern options within that brand.
• Assuming any Good grade equals zero PFAS. Even our highest-graded entries here, the Nikwax formulas, are described as lower concern based on model estimates, not certified PFAS-free.

If you are also shopping for footwear itself rather than just the spray, our waterproof boots roundup applies the same grading approach to finished products, and the PFAS Authority finder tool lets you search by product name directly.

Our pick

Based on available materials and data, the Nikwax family is the better-graded choice for shoe waterproofing sprays in our database, with the Fabric & Leather Proof Spray as a reasonable general-purpose starting point for most fabric and leather sneakers and boots. If you specifically work with suede or nubuck, the dedicated Nubuck & Suede Waterproofing Spray is built for that material rather than a general-purpose formula stretched to cover it. Hikers and trail users leaning toward technical gear may prefer TX-Direct Spray-On, which is marketed specifically for that use case.

None of these picks come with an independent lab certificate confirming zero PFAS content in the sources we reviewed, and our Good grade should be read as "lower estimated concern relative to other sprays we graded," not as a guarantee. If you are trying to reduce PFAS exposure across your home more broadly, it is worth applying the same scrutiny to other textile categories, our clothing and carpets and rugs guides use a comparable grading approach for other product types that commonly carry fluorochemical treatments.

FAQ

Does a Good grade mean a shoe spray is PFAS-free?

No. A Good grade reflects our model's estimate of lower concern based on disclosed materials, formulation type, and public data, not a laboratory confirmation of zero PFAS content. Brands that state their products are fluorocarbon-free are making a brand claim, and we have not found independent lab verification for that specific claim across the products in this guide.

Are aerosol sprays always worse than pump sprays for PFAS concern?

Not automatically, but in this dataset, the aerosol products we reviewed graded Poor while the non-aerosol, water-based Nikwax formulas graded Good. That pattern is based on the specific products in our database, not a universal rule about all aerosol chemistry, and it reflects disclosure quality as much as delivery format.

Is there a proven health risk from using a Poor-graded shoe spray?

Our grades describe estimated chemical concern based on formulation and disclosure signals, not a confirmed health outcome. Any association between PFAS exposure and health effects discussed in public research is just that, an association, not evidence of causation for a specific product or a specific user. If you have health concerns, consult a medical professional rather than relying on a product grade alone.