RADIUS
RADIUS is a mainstream-adjacent oral-care brand rather than a plastic-free specialist, and it hedges: its silk floss (coconut oil + carnauba wax) is a genuine plastic-free product, but it also sells a vegan floss whose thread is nylon - plastic, though not PFAS. Because both carry the RADIUS name, the fiber on the specific pack is what matters; we point readers to the silk SKU.
How clear are their specs?
Materials are stated per product, but the brand sells both a silk and a nylon floss under similar branding, so buyers have to check which line a given pack is.