Nikwax · Shoe Waterproofing Sprays
NikWax Waterproofing Spray
A water-repellent or grease-resistant treatment of unstated chemistry, with a brand PFAS statement we have not verified.
Nikwax says it has never used PFAS in any of its products. We record that as an unverified brand claim. Its record describes a water-repellent or grease-resistant treatment of unstated chemistry, which is still counted.
Brand says: “Nikwax says it has never used PFAS in any of its products.”
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Solvent-based or water-based waterproofing treatment (formula not publicly disclosed)
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
What NikWax Waterproofing Spray is made of, ingredients and materials
Nikwax does not publicly disclose the full composition of this waterproofing spray. The product is labeled as either solvent-based or water-based (formulation varies by product line), and works by depositing a hydrophobic film on fabric or leather. Without ingredient transparency, the specific solvents, resins, or active agents cannot be assessed in detail. The brand claims PFAS-free status, but independent verification of this claim is not on public record.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
Waterproof / stain-resistant treatment
Water-repellent coating treatments have historically used PFAS.
Volatile organic compounds (VOCs) and solvent inhalation
Solvent-based formulations (if present in certain product variants) can release VOCs during and shortly after application. Nikwax does not disclose whether this spray uses high-VOC or low-VOC solvents, so the inhalation risk profile is not quantifiable from public information.
Skin and eye irritation from spray contact
Waterproofing sprays inherently pose a risk of direct contact with eyes or skin during application. No specific adverse event reports for Nikwax spray are on record, but the product's instructions (where available) typically recommend gloves and eye protection.
Coating degradation and reapplication necessity
Non-PFAS water-repellent coatings degrade faster than PFAS-containing alternatives, particularly under UV exposure and repeated washing. Users report needing frequent reapplication (every 6-12 months), increasing cumulative exposure to the treatment chemical.
What’s reassuring
Brand-stated PFAS-free
The brand states this product is PFAS-free. We have not verified the claim.
Flame retardants
No public documentation indicates that Nikwax waterproofing spray contains added flame retardants. Waterproofing sprays are not typically formulated with halogenated or organophosphate flame retardants, but product-specific confirmation is absent.
Source, EPA ↗Heavy metals
Nikwax does not disclose heavy metal content or azo dye use in this spray. For waterproofing treatments applied to footwear and textiles, such additives are not standard, but the lack of transparency prevents definitive assessment.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Nikwax is a UK-based company with a long history in outdoor textile treatment and has made explicit PFAS-avoidance a marketing position. However, detailed safety data sheets and third-party testing results for this specific spray are not widely published in consumer-accessible databases. The brand has not faced major recalls or public safety controversies specific to this product line. Certification status (e.g., Bluesign, GOTS, or EcoCert) for this spray is not clearly documented in available sources.
How it compares in its category
Waterproofing sprays in this category typically rely on either wax, silicone, or hydrocarbon-based coatings; PFAS-free variants are increasingly common but less durable than legacy PFAS formulas. Nikwax positions itself as PFAS-free and environmentally focused, differentiating from older spray treatments that may contain fluorinated compounds. Durability and water-repellency typically degrade faster with non-PFAS formulas, requiring more frequent reapplication. Direct performance comparison data between Nikwax and competitors is sparse in independent testing.
If you buy it
Apply in a well-ventilated space or outdoors to avoid inhalation of spray mist and any volatile organic compounds. Do not apply near heat sources or open flame; allow treated items to dry fully (typically 24 hours) before wearing or storing. Reapply every 6-12 months or when water no longer beads on the fabric surface, depending on wear and weather exposure. Wash hands after application and avoid direct skin contact; eye exposure is unlikely with correct spray technique but rinse if contact occurs.
What is not known about PFAS in this product?
- Basis
- Model estimate, 45% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Nikwax has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
More shoe waterproofing sprays 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.