Fels Naptha Laundry Soap & Stain Remover Bar vs Waterproofing Wax for Leather: which is safer?
Fels Naptha Laundry Soap & Stain Remover Bar is the clear pick. Nikwax Waterproofing Wax for Leather carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Fels-Naptha
Fels Naptha Laundry Soap & Stain Remover Bar
PFAS grade
Excellent 85/100
Overall grade
Excellent 81/100
Verdict
Buy
Hazard flags
⚑ 1
Material
soap bar, vegetable and animal oils
Confidence
92%
PossibleHeavy metals in optical brighteners
Nikwax
Waterproofing Wax for Leather
PFAS grade
Good 65/100
Overall grade
Good 51/100
Verdict
Skip
Hazard flags
⚑ 2
Material
wax-based waterproofing
Confidence
78%
PossibleRespiratory irritation or fume inhalation during application
ReportedPFAS in water repellency treatment
Where these two actually differ
- We flag Heavy metals in optical brighteners on the Fels-Naptha and not on the Nikwax.
- We flag Respiratory irritation or fume inhalation during application and PFAS in water repellency treatment on the Nikwax and not on the Fels-Naptha.
- The Fels-Naptha is soap bar, vegetable and animal oils where the Nikwax is wax-based waterproofing, which is most of the difference in these two grades.
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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