What are some helpful methods for severe internal skin dryness?

I can definitely feel my skin getting dry as the weather gets colder.

My skin tends to be quite dry from the inside out, and it seems to get even worse in the winter.

Previously, I mostly used skincare focused on hydration.

How do those of you with internal dryness manage it?

Please share any items that help with your daily care or any treatments you are currently receiving.