In Red Dead Redemption 2, the developers introduced many diverse mechanics. There are also elements of "survival."
Under normal circumstances, the hero in RDR 2 can wash in a hotel or swim in a river, but modder saul0097 offered an immersive and more effective solution to the problem of dirt — he added the ability to wash in the nearest available body of water.
Washing will give a temporary bonus to stamina, and for the sake of balance, a 6-hour cooldown has been set for it (you can still wash during this period).
The Wash Yourself modification for Red Dead Redemption 2 is available for free on Nexus Mods.