I have problems with Geralt horse and other horses. Tail and head without hair or with some hair.

A widespread problem that has been patched. Unfortunately it doesn't get fixed retroactively, so any previous saved game still has the issue. If you have the console enabled (via mod) you can easily fix this issue: you *must* be riding Roach. When you've mounted up, open the console and type

KillHorse()

Now recall Roach and her tail and mane will be fixed. You may then save your game.

pff, I need to fix it, but i don't like mods and others, Devs already not fix it and i must start new game? I played 150 + hours

It has been fixed. It is your choice from this point on.

But if i don't have mods how can i fix it? How can i use console

Your choices are:
1. Put up with it in this playthrough.
2. Start a new game -- you won't have the issue.
3. Install the console enabler. Type one simple command to fix it. Uninstall the console enabler.

Install a mod and get a "tainted" savefile? This from your mouth? Bummer!
CDP should fix it properly and they are well capable of that!

What the hell are you blathering on about?

@FuryOfBeasts:

The console enabler mod is not a toolkit mod. It does not add textures; it does not alter textures; it does not remove textures; it does not add scripts; it does not change scripts; it does not remove scripts; it does not alter anything in-game. The console is a CD Projekt Red developer console -- designed and created by CDPR -- that is already in the game. It was just disabled in the release version of the game. Every command you issue is a CD Projekt Red command. The console enabler mod is simply an external library that re-enables the console in-game. It is a very powerful tool, but issuing that one command to fix your horse will have ZERO consequences for your saved game, other than to fix it.

I agree CDP must fix it. Its not problem of people. I spent my money on game and 2 DLC.

It's has been fixed.