Shoe Stain & Water Repellent Spray & Refill Bundle vs Waterproofing Wax for Leather: which is safer?

Where these two actually differ

• We flag PFAS in water/stain repellent coating, Inhalation exposure (aerosol spray), Skin and eye irritation from spray contact and VOC off-gassing and environmental persistence on the Jason Markk 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 Jason Markk.
• The Jason Markk is proprietary water and stain 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.
• We are less certain about the Jason Markk grade, at 35% confidence against 78%, because it discloses less.