Stain Resistant Classic Woven Italian Silk Necktie vs H-mors Twillbi Tie 7cm: which is safer?

Where these two actually differ

• We flag Undisclosed stain-resistant coating chemistry and Coating degradation and leaching during care on the Brooks Brothers and not on the Hermès.
• We flag Azo dyes and heavy-metal mordants, Formaldehyde-releasing finishing resins, Residual dye and chemical volatiles and PFAS in water-repellent or stain-resistant coatings on the Hermès and not on the Brooks Brothers.
• The Brooks Brothers is Italian silk with unspecified stain-resistant finish where the Hermès is silk twill, which is most of the difference in these two grades.
• The gap is 65 points, wide enough that this is not a close call, and the Hermès is the one to buy.
• We are less certain about the Brooks Brothers grade, at 35% confidence against 78%, because it discloses less.