You posted an electron microscope image of a cylindrical hair...

It looks scaly when viewed with the extreme resolution and contrast of an electron microscope. Without that extreme resolution, some details are lost and you can't clearly perceive those scales.

It also looks different in grayscale, and the election microscope can't see transparency. But otherwise, I think those both look pretty identical, they look like hair.

Also, if you zoom in, you can in fact see those scales in some places. (The transparency of those thin layers contributes to making them hard to see)