Scotchgard Protector vs Waterproofing Wax for Leather: which is safer?

Where these two actually differ

• We flag Volatile organic compounds (VOCs) and spray inhalation risk, Fabric irritation and sensitization on direct skin contact, Coating degradation and potential leaching into seating surfaces and Off-gassing of unknown chemical compounds on the Bissell 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 Bissell.
• The Bissell is Proprietary stain and 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.
• We are less certain about the Bissell grade, at 45% confidence against 78%, because it discloses less.