Fels Naptha Laundry Bar and Stain Remover, 5.0 oz vs Waterproofing Wax for Leather: which is safer?

Fels Naptha Laundry Bar and Stain Remover, 5.0 oz 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 Laundry Bar and Stain Remover, 5.0 oz

Fels-Naptha

Fels Naptha Laundry Bar and Stain Remover, 5.0 oz

PFAS grade

Excellent 85/100

Overall grade

Good 63/100

Verdict

Buy

Hazard flags

⚑ 4

Material

soap bar, tallow and coconut oil base

Confidence

82%

PossibleAlkaline burn risk (skin/eyes)

ReportedFragrance allergens

PossibleResidue build-up on fabric

Why this gradeBuy
Nikwax Waterproofing Wax for Leather

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

Why this grade

Where these two actually differ

  • We flag Alkaline burn risk (skin/eyes), Fragrance allergens, Residue build-up on fabric and Mold or bacterial growth on bar 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, tallow and coconut oil base 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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