Waterproofing Wax for Leather vs Wool And Cashmere Fabric Spray: which is safer?
Nikwax Waterproofing Wax for Leather is our pick: better on PFAS and on the overall hazard picture.
Our pick
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
The Laundress
Wool And Cashmere Fabric Spray
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFragrance allergens and skin sensitizers
PossiblePreservative and antimicrobial residues
PossibleInhalation exposure during spray application
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 Fragrance allergens and skin sensitizers, Preservative and antimicrobial residues, Inhalation exposure during spray application and Surfactant skin or eye irritation on direct contact on the The Laundress and not on the Nikwax.
- The Nikwax is wax-based waterproofing where the The Laundress is fabric spray (aqueous formulation for wool/cashmere), which is most of the difference in these two grades.
- The gap is 25 points, wide enough that this is not a close call, and the Nikwax is the one to buy.
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 →
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