Waterproofing Wax for Leather vs Color Safe Set In Carpet Cleaner and Stain Remover Spray: 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 Shout.
• We flag Surfactant skin and eye irritation, Synthetic fragrance allergens and respiratory sensitization, Polymer microparticle shedding and inhalation and PFAS presence (see separate PFAS grade) on the Shout and not on the Nikwax.
• The Nikwax is wax-based waterproofing where the Shout is aqueous surfactant solution, polymer blend, which is most of the difference in these two grades.
• We are less certain about the Shout grade, at 35% confidence against 78%, because it discloses less.