Protect & Preserve for Leather 8.4 oz Repels Stains, Retains Color and Softness vs Waterproofing Wax for Leather: which is safer?

Where these two actually differ

• We flag Volatile organic compounds (VOCs) and inhalation risk, Undisclosed fluorocarbon polymers (non-PFAS synthetic concerns), Skin and respiratory sensitization from fragrance or additives and Coating degradation and re-exposure over time on the Guardsman 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 Guardsman.
• The Guardsman is Proprietary leather coating/protectant, composition undisclosed 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 Guardsman grade, at 35% confidence against 78%, because it discloses less.