I second the request for a citation.
Feel free to refute this, but here’s an article I found that suggests there’s little evidence that Head and Shoulders is bad for your hair - at least the ones that aren’t Clinical Strength.
Minor anecdote: I used to have severe dandruff, then I started using Aveeno’s Apple Cider Vinegar products and that helped a LOT, but now I use the ACV H&S and I haven’t had any real complaints since the switch.
RCV doesn’t “solve” the issue though. The fact that third party candidates can sway elections to the least preferred candidate is known as the “Spoiler effect”, and RCV is also subject to it.
RCV seems to be objectively better than plurality (what we use now), but it and any other ranking-based voting system are still subject to spoilers. One thing that can actually “solve” the issue though is rating-based systems, like Approval Voting, Score Voting, or STAR voting.
Good video on the subject