Final fabrics produced by the industry are estimated to contain around 27% chemicals (by weight) if made of 100% natural fibers, with significantly greater chemical amounts used in synthetic fibers.

Notes:

We do not have access to the book, but it is cited in a peer reviewed journal.

Primary Source:

Lacasse, K.; Baumann, W. Textile Chemicals: Environmental Data and Facts. Springer Berlin Heidelberg: New York, 2004; page 609

Secondary Source:

https://pubs.acs.org/doi/full/10.1021/acs.est.7b00701

---