Hi i had a question about how many times i should prewash the fabric and what kind of fabric works best. i have cotton shirts and pillowcases (200 thread count) and a set of egyptian cotton pillow cases (400 TC). i heard cotton would work but if you guys have any other suggestions or tips it would be greaty appreciated :) Thanks!!
oh and how much chemistry should i use? i heard it was 6x as much for paper