Waterproofing Wax for Leather vs Fabric Spray: which is safer?
The Laundress Fabric Spray is the clear pick. Nikwax Waterproofing Wax for Leather carries a failing PFAS grade, and we never recommend buying a failing product.
Nikwax
Waterproofing Wax for Leather
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleRespiratory irritation or fume inhalation during application
ReportedPFAS in water repellency treatment
Our pick
The Laundress
Fabric Spray
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleInhalation of aerosolized formula and conditioning agents
PossibleSkin and eye irritation from direct contact
ReportedFabric discoloration or texture alteration
Where these two actually differ
- We flag Respiratory irritation or fume inhalation during application and PFAS in water repellency treatment on the Nikwax and not on the The Laundress.
- We flag Inhalation of aerosolized formula and conditioning agents, Skin and eye irritation from direct contact, Fabric discoloration or texture alteration and Undisclosed fragrance allergens on the The Laundress and not on the Nikwax.
- The Nikwax is wax-based waterproofing where the The Laundress is water-based formula with fabric-conditioning agents, which is most of the difference in these two grades.
- We are less certain about the The Laundress grade, at 45% confidence against 78%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More fabric stain guard sprays: see the full ranking