To break in a new boar brush I simply first wash/soak it with head and shoulders or some form of shampoo.. then I rinse it out and do a lather with one of my Shave soaps.. leave it lathered for a few hours.. then rinse again.. allow it to dry, and by the next day it’s usually dry and have almost no scent of the boar.. and in my experience the break in (splitting of the ends) happens in a matter of just a few shaves after.. I have a Semogue and omega brush I had to bring in recently. Each has two shaves on them and they’re looking and feeling beautiful already