For example, my elbows, knees, and shins get dry often but my stomach, thighs, and neck are a lot smoother.
In: Biology
i don’t know for shure but here are a few observations and conclusions of mine:
the skin on the elbows, knees and lips moves a lot around than neck or stomach and you also stretch it a lot more so that is maby why the body cant build up a well functioning oil/fat layer so it dies out faster
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