i don't even know what mod this comes from, but i'll try searching for it and thanks for the guide

Please see with the author if you are allowed to edit the mod, most people are okay with it but some might not.

Sure, all you have to do is :
1 - Launch Kenshi, but instead of launching the game launch the mod tool
2 - Click on "Open any" and locate Steam\steamapps\workshop\content\
3 - Now you'll have to search inside each folder and subfolder for the modname.mod
4 - Once you found the mod and opened the file .mod , search for the change concerning the hat and double click on it
5 - Search for the property "hide hair" and turn its value to "false"
6 - To finish save and launch the game

also since it seems that this hat comes from a mod, may i learn how to make that fix?

Here it is https://imgur.com/a/EchlHYA
By the way is there any way to see from what mod certain items comes from?

Yeah sure upload it somewhere and drop the link, i'll take a look.

If it's from a mod I can't make a fix but I can tell you how to make one

i'm actually not sure either, should i take a picture of it?

are you sure that it doesnt come from a mod ? I can't find this hat in the editor :(

it's the wanderer's straw hat

Can you tell me which hat you are talking about please ?
I have the Bucket Zukin in mind but I'm not sure this is the one.

will there be a fix for that one hat that covers your entire face you start with at holy sword start? i was heavily dissapointed at the time when i peek underneath the hat and found my beautiful hair is gone