Silicone Water Repellent vs Waterproofing Wax for Leather: which is safer?

Nikwax Waterproofing Wax for Leather is our pick, better on PFAS and on the overall hazard picture.

Angelus Silicone Water Repellent

Angelus

Silicone Water Repellent

PFAS grade

Poor 40/100

Overall grade

Poor 32/100

Verdict

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Hazard flags

⚑ 2

Material

silicone-based water repellent coating

Confidence

62%

PossibleVolatile organic compounds (VOCs) during application

PossibleSkin or respiratory sensitization from aerosolized coating

Our pick

Nikwax Waterproofing Wax for Leather

Nikwax

Waterproofing Wax for Leather

PFAS grade

Good 65/100

Overall grade

Good 51/100

Verdict

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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 Volatile organic compounds (VOCs) during application and Skin or respiratory sensitization from aerosolized coating on the Angelus 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 Angelus.
  • The Angelus is silicone-based water repellent coating where the Nikwax is wax-based waterproofing, 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, 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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