Question: how to get a horse brush in red dead 2 online?
Answer: Bizarrely, you won't have a Horse Brush when you start Red Dead Online. Your horse will still get dirty though and will need brushing, so you'll need to buy a Horse Brush. To do so, open up the Catalogue by holding left on the d-pad. Head to the Horse Care section and buy the Horse Brush for $3.75.