Why does my skin type change from oily to dry?

Why does my skin type change from oily to dry? So, this can depend whereabouts in your monthly cycle you are, also the types of food that you're eating your water intake quality of your sleep and the products you are using on your skin.

So not just skincare, but sometimes different types of makeup have different oil content and different water content that can cause already oily skin to produce more oil and it can dry out skin as well.