Men's Standard-Fit Wrinkle-Resistant Dress Shirt vs Men's Farrier's Work Shirt: which is safer?

Where these two actually differ

• We flag Formaldehyde (or formaldehyde-releasing resins) in wrinkle-resistant finish, Finish coating degradation over time and with heat and Allergen risk from fragrance or dye residues in finish on the Banana Republic and not on the Patagonia.
• We flag Formaldehyde releasers in durable-press resins and Chemical off-gassing or skin irritation from finish residues on the Patagonia and not on the Banana Republic.
• The Banana Republic is cotton-blend fabric with wrinkle-resistant finish where the Patagonia is Organic cotton, standard construction, which is most of the difference in these two grades.
• The gap is 70 points, wide enough that this is not a close call, and the Patagonia is the one to buy.
• We are less certain about the Banana Republic grade, at 45% confidence against 72%, because it discloses less.