Stain Devils Fat & Cooking Oil Stain Remover vs Waterproofing Wax for Leather: which is safer?
Carbona Stain Devils Fat & Cooking Oil Stain Remover is the clear pick. Nikwax Waterproofing Wax for Leather carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Carbona
Stain Devils Fat & Cooking Oil Stain Remover
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleHydrocarbon solvent vapor inhalation
PossibleDermal sensitization and irritation
ReportedFlammability
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
Where these two actually differ
- We flag Hydrocarbon solvent vapor inhalation, Dermal sensitization and irritation, Flammability and Aquatic toxicity and environmental persistence on the Carbona 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 Carbona.
- The Carbona is Liquid organic solvent blend, likely hydrocarbon-based 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, which covers 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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