Hi mikbp! While it's possible that some people downvoted because of the spelling mistake (which I think shouldn't happen), I was inclined to downvote, too, mainly because when I clicked on the post I was hoping to find some details on why this is an important problem, how long my hair needs to be, how long a donation takes, what good my hair donation could do, upsides and downsides etc. Your post seems more like a call to action and maybe could have been a shortform instead! 😉
Also, from a fellow non-native speaker to another: There are many Websites and online Tools that will proofread your texts (grammar, spelling, etc.), maybe you want to play around with them a bit? I think this could really help to improve your writing and make it more appealing and understandable to other forum users! :)
hear -> hair, right?
Yep, sorry!