This is a shader demonstration for Alembic hair in Unreal Engine 4.25, which allows you to customize melanin, pheomelanin, and so on. Since I'm working on a detailed lesson about the "Alembic Hair", I decided to record such a teaser.
P.S. Model is very old from 2016 =) Therefore, I don't want to show it closely. =)
If you want to create the shader like this, you can buy this tutorial: