With detergent, our product exhibited a steeper decrease in percentage silver remaining in cotton until 10 cycles (about 67%) but a gradual decrease with additional laundering cycles. About 58% of the original amount of silver remained after 50 cycles. Lee et al. reported that the cotton fabrics treated with silver colloid using the pad-dry-cure method exhibited poor washing durability; i.e., only 7% of the total silver applied remained after 20 cycles.41 This result indicates that the pad dry-cure process alone is not a proper way to fixate a nanoparticle onto textiles. The studies by El-Rafie et al.29 andMitrano et al.42 showed that the addition of a binder in the pad-dry-cure process improved the washing durability but the resulting retention was still lower than that of our product. Interestingly, the T-shirts of Reed et al. showed better washing durability in detergent solution than in water; however, the percentage of silver remaining rapidly dropped to 44% after 20 cycles.