There are a few ways you can train your beard to lay down nicely. The first is by scrubbing it with a towel while wet, which will help loosen the hairs and make them easier to comb downwards. You should also use an exfoliating soap like Dove or Olay before this process, as they have small granules that increase exfoliation. These steps will take some time but might be worth it if you want your beard to lay flat on its own over time!