Men's Boss Silk Tie vs Perry Ellis Men's Paddon Micro Slim Necktie: which is safer?

Where these two actually differ

• We flag Azo dyes and synthetic colorants, Formaldehyde-resin finishing agents, Heavy-metal mordants (chromium, copper, nickel) and Allergen fragrance or finish residue on the Hugo Boss and not on the Nano-Tex.
• We flag Azo dyes and colorant toxicity, Heavy metals in pigments and Fragrance allergens or dye transferability on the Nano-Tex and not on the Hugo Boss.
• The Hugo Boss is silk where the Nano-Tex is silk or silk-blend woven tie, no water/stain treatment claimed, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.