To come off/peel off; to have a surface layer (skin, paint, etc.) come away (intransitive).
日焼けして皮が剥けてきた。
I got sunburned and my skin is peeling.
みかんの皮は簡単に剥ける。
The peel of a mandarin comes off easily.
古いペンキが剥けて下地が見えている。
The old paint has peeled off and the underlying surface is visible.
靴擦れで足の皮が剥けた。
The skin on my foot peeled from a blister caused by my shoes.