On a serious note, he likes to use me as an example to justify his point, but he doesn't seem to realise, I have dry spells, then work out how to overcome them to get the odds in my favour. Like recently was not getting many matches, then reconfigured my dating app settings, now they are flowing again.
If I were him, and thought hair was the issue, I would get a hairsystem, find someone, get into a long term relationship, then take it off once it is a secure relationship. By that point, the woman will probably be understanding.
If not, start the process again.