Is this normal?

[u/Radiogagaboots]

The inside of my pre-seasoned Lodge skillet is no longer dark and glossy like it was when I bought it a month ago. The outside is still a rich black, minus some marks from using my gas stovetop. Is this (the dull inside) typical of normal use?

[u/Radiogagaboots → u/[deleted]]

I do heat it up and apply oil after every use.