H-mors Twillbi Tie 7cm vs Banana Republic $59.50 Men University Stripe Silk Nanotex Tie: which is safer?

Where these two actually differ

• 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 Nano-Tex.
• We flag Undisclosed coating chemistry (PFAS risk) and Coating shedding or microparticles when worn on the Nano-Tex and not on the Hermès.
• The Hermès is silk twill where the Nano-Tex is Silk with Nanotex finish (proprietary coating), 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 Nano-Tex grade, at 35% confidence against 78%, because it discloses less.