Colgate
Colgate is a conventional oral-care giant. Its "Total" floss fiber is PTFE - a fluoropolymer in the PFAS family - while it also sells plain nylon floss, so the fiber depends on the exact product. Independent 2024 lab testing found Colgate Total Mint Waxed high in organic fluorine. We document Colgate floss as a corrective, steering readers to silk.
How clear are their specs?
Markets on performance rather than materials and does not foreground that the "Total" fiber is PTFE; the fiber type was surfaced by independent testing, not prominent brand disclosure.
Products to avoid
Documented so you know what to skip — each still has a full breakdown and sources.