I cant handle the minoxidil itch

Minoxidil is making my scalp sooo fucking itchy and irritated. Most likely the PG but I can’t get a pg free formula where I am right now. Foam is not effective enough because it most of it goes in my hair and very little gets to the scalp, I use a dropper with the liquid minox to maximise efficiency.

Gonna switch to oral min soon but any tips in the meantime?