The soil-release functionalized polyester apparel fiber market is projected to be valued at USD 1.2 billion in 2026 and is expected to reach USD 2.6 billion by 2036, expanding at an 8.0% CAGR. By soil-release technology, hydrophilic block copolymer finishes account for about 34% share. By apparel category, casualwear and everyday apparel represent about 30% of total demand.