Men's OG Stripe Silk Blend Tie vs H-mors Twillbi Tie 7cm: which is safer?

Where these two actually differ

• We flag Azo dyes and heavy metal pigments, Formaldehyde resins in finishes, Antimony in polyester and Loose dye bleed and color instability 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 silk blend (silk, likely polyester), no functional coating disclosed where the Hermès is silk twill, which is most of the difference in these two grades.