So does that mean there is a difference between "100% mercerized cotton" and just "100% cotton"? The type I picked up is from coats and clark, coats cotton, all purpose, 100% mercerized cotton. Wayne says he uses mercerized cotton, so i figured the pain im getting was due to sensitive eyes and hense this product has been sitting on the shelf. But, like i asked above, if there is a difference btwn 100% cotton and 100% mercerized cotton, i'd be willing to find the other and give it a go.