47155 Scotchgard Auto Fabric & Carpet Protector 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.
3M
47155 Scotchgard Auto Fabric & Carpet Protector
PFAS grade
Poor 40/100
Overall grade
Bad 0/100
Verdict
Skip
Hazard flags
⚑ 5
Material
Proprietary fabric/carpet protection coating
Confidence
35%
ReportedPFAS in formulation
LikelyAerosol inhalation and volatile organic compounds (VOCs)
PossibleMicroparticulate residue on fabric
Our pick
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 PFAS in formulation, Aerosol inhalation and volatile organic compounds (VOCs), Microparticulate residue on fabric and Skin and eye contact during application on the 3M 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 3M.
- The 3M is Proprietary fabric/carpet protection 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.
- We are less certain about the 3M grade, at 35% confidence against 78%, because it discloses less.
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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