Earth Breeze
Earth Breeze markets itself as plastic-free because it does away with the detergent jug - but the sheet itself is bound with polyvinyl alcohol (PVA), a water-soluble plastic that appears on the brand's own ingredient list. So the plastic moves from a jug you can see to a film that dissolves into your wash. The company argues its PVA isn't a microplastic and biodegrades, which is the disputed industry position; the material fact - that the sheet is plastic film plus detergent - is not in question.
How clear are their specs?
Publishes an ingredient list that does include polyvinyl alcohol, but leans on "plastic-free" marketing that talks about the jug, not the PVA film.
Products to avoid
Documented so you know what to skip — each still has a full breakdown and sources.