Scotchgard 297g Fabric And Upholstery Protector vs Waterproofing Wax for Leather: which is safer?

Where these two actually differ

• We flag Volatile Organic Compounds (VOCs) from aerosol propellant and solvent carrier, Fragrance allergens and sensory irritation, Skin or eye contact during application and Undisclosed formulation chemistry and ingredient opacity 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/upholstery protector 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.