Given: 100% cotton dress shirts always worn with tie and buttoned snuggly (military style). Laundered commercially after one day's use. Applies to those bought right off the shelf and those custom made over the past 45 years.
Problem: Within months, collar begins to show signs of discoloration which grows increasingly worse. Before I kick the bucket... I'd sure as heck like to find an answer to these two questions:
Q1) How remove prevent? Q2) How prevent?