I thought hydrogen peroxide could damage fabric? I seem to recall reading a story on Leah Day's blog about her first wholecloth quilt, and she put hydrogen peroxide on it for some reason and it ended up "burning" it....?
Yeah, here it is:
http://www.leahday.com/quilttheduchess/ Look for the "Update: Spring 2012" entry. It's about 2/3rds down the page. This story scared me off of hydrogen peroxide on fabric! It's tragic looking at those photos....so much amazing work.