My hair is not that long, but it's longer than almost everyone I see when I'm out and about. Currently, without leaning my head back, it goes past the small of my back. If I lean my head back it goes to down to my thighs. I wear it in a side braid, or else it will take over the area. I take collagen, vitamins, etc. However, my hair was long before I started taking supplements. Maybe it's genetics, but I'm not sure. All my grandmothers had short hair.