It's a serious problem, but it's one that requires people to stop using so much plastic; to make sure they re-use plastic; and to make sure that plastics are recycled after use.
Microbeads in cosmetics and microfibres from clothing are a huge problem.
Part of the answer is simply to stop using non-biodegradable stuff in cosmetics.
It isn't difficult to do. All that is needed is an incentive like making inclusion of plastic micro-beads illegal. Isn't California considering doing that?
Wow, that is encouraging. I hope that is true and gets passed. It could mean the end of yoga pants (they are good and bad) so I'm not sure how I feel about this. :)
So much this and I don't know that we really have an answer to fix this. This micro things are toxic to the entire aquatic ecosystem.