Purex Fels-Naptha Laundry Bar & Stain Remover & Pre-treater vs Waterproofing Wax for Leather: which is safer?

Purex Fels-Naptha Laundry Bar & Stain Remover & Pre-treater is the clear pick. Nikwax Waterproofing Wax for Leather carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Purex Fels-Naptha Laundry Bar & Stain Remover & Pre-treater

Fels-Naptha

Purex Fels-Naptha Laundry Bar & Stain Remover & Pre-treater

PFAS grade

Excellent 85/100

Overall grade

Good 73/100

Verdict

Buy

Hazard flags

⚑ 3

Material

soap bar, sodium tallowate and coconut oil base

Confidence

82%

PossibleFragrance allergens and sensitizers

PossibleAlkalinity and skin irritation

PossibleResidue buildup on fabric or skin

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 Fragrance allergens and sensitizers, Alkalinity and skin irritation and Residue buildup on fabric or skin 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, sodium tallowate 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 →

More fabric stain guard sprays: see the full ranking