This is how to cut hair with a razor, part two. This is a way of removing weight from the body of the hair, and not just the outside.
I take a center section, and I lift the hair straight out from the head, so we have a very clear vision of where I'm going to take the weight out from. I'm going to go in just with the tip of my blade, and point through the mid shafts of the hair. So I'm leaving all of the length, but I'm literally just going through the body of the hair, and taking that weight out. You can see, this is what we take out.
That's how you cut hair with a razor to remove weight.