Waterproofing Wax for Leather vs Complete Kit Shoe Care Kit: 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 Shoe MGK.
• We flag PFAS in water-repellent formulations, Skin contact irritation from undisclosed additives, Formaldehyde or phenolic preservatives in liquid conditioners and Respiratory irritation from volatile organic compounds (VOCs) in oils and waxes on the Shoe MGK and not on the Nikwax.
• The Nikwax is wax-based waterproofing where the Shoe MGK is shoe care products, likely waxes, creams, brushes, cloth, which is most of the difference in these two grades.
• We are less certain about the Shoe MGK grade, at 35% confidence against 78%, because it discloses less.