Grooming is a feature in Red Dead Redemption 2 (RDR2). Players can opt to customize their hair and keep clean in order to affect their looks and how they are perceived by NPC characters.
Grooming in RDR2
Trimming & Shaving
With an overall improved level of customization and realism, you can fully expect there to be no exceptions -not even with hair! Hair growth has been added into the game, if you fail to get a regular trim at the local Barber. This includes facial hair as well, both of which can be fully customized by visiting a Barber, or by locating the mirror to do it yourself at the Van Der Linde Gang camp.
In terms of realism, the game takes it a step further by only allowing you to cut hair off when customizing, as opposed to magically growing more for the sake of a look. This means if you've recently had a clean shave, you'll have to wait a bit before getting that sweet goatee you had in mind.[example pic]
Keeping clean is also important and players can opt to wash themselves and clothes in order not to be off-putting.[example pic]