Waterproofing Wax for Leather vs Balm Proofer Water & Stain Repellent: which is safer?

Where these two actually differ

• We flag Respiratory irritation or fume inhalation during application and PFAS in water repellency treatment on the Nikwax and not on the Timberland.
• We flag Inhalation of spray aerosol / volatile organic compounds, Skin or eye contact during application, Accumulation of coating residue on treated fabric and Bioaccumulation of PFAS in water and soil during washing on the Timberland and not on the Nikwax.
• The Nikwax is wax-based waterproofing where the Timberland is proprietary water and stain repellent coating, 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 Timberland grade, at 35% confidence against 78%, because it discloses less.