Started finasteride 10 days ago, noticing white bulbs at the ends of hair that is falling out. Is this a good sign?

Hello, I’m 23yo and I started finasteride 10 days ago. I have slightly receded on my hairline but I believe I started finasteride at a great time in my life anyways I noticing thin hairs that are so tiny with white bulbs at the end of them when they shed. Any signs of this being good? What is it?