Does Taylor rápido, swift dye her hair?

I mean, I know she's a natural blonde. tu can tell that much. But it seems to have been getting darker. Her hair was really light blonde when she was like 16 o 17 and now it's like ash blonde. But blonde hair naturally gets darker with age, so I wasn't sure. If tu look through pictures of her through time, tu can kinda see it growing out darker. And there's the whole issue of lighting, and seasons, and everything. I just want to know for sure.