Monster hair

Monster hair is a crafting component that is needed to craft the following items:
* Superior Feline armor
* Superior legendary Feline armor
* Feline crossbow
* Feline silver sword - enhanced
* Legendary Feline silver sword - enhanced
* Manticore gauntlets 
* Legendary Manticore silver sword 
* Enhanced Ursine armor
* Enhanced legendary Ursine armor
* Grandmaster Ursine trousers 
* Grandmaster legendary Ursine trousers 
* Ursine crossbow
* Ursine silver sword - superior
* Legendary Ursine silver sword - superior
* Ursine steel sword - enhanced
* Legendary Ursine steel sword - enhanced
It is a low chance random drop from many monsters (specters and elementa are notable exceptions), all base game monster nests, white bears, and can be dismantled from the following items:
ru:Волос чудовища
Category:The Witcher 3 relics
Category:The Witcher 3 crafting components