My Falling Hair Has Different Textures

I am a 30 years old male, I have found that my falling hair have different textures. I notice this when I shower. Some of the hairs are much finer and lighter in color while some hairs are thick and dark. By the way, the falling fine hairs in the bath are generally shorter than the falling thick hair in length. I do not understand this situation, I guess those fine hairs are the ones still in process of growing out? Or those fine hair are actually from shrunken follicles? Cheers.

The falling fine hairs are likely miniaturized hairs that may be at the end of their life cycle. They sometimes become lighter losing their dark color, almost blonde or gray in a black haired male.