Imagine two layers of dough rolled out on a table top: one light-colored layer on top of a dark layer.
Now imagine that you press a hole with your finger into the top layer until you almost touch the table top.
You have have now created a 'follicle' in the dough. Notice that the top layer lines the hole all the way through the bottom layer.
The top layer corresponds with the epidermis layer of the skin, and the bottom layer with the dermis layer.
