So let's suppose we have a small nonpolar molecule shown in purple. And this nonpolar molecule exists in the cage in a salvation shell that is shown in this diagram. And before it actually makes its way into this non polar cell membrane, this nonpolar molecule must break free from this cage. So it basically bounces back and forth, and eventually it makes its way out, eventually collides with this phospholipid bilayer membrane, and it makes its way into this nonpolar region. So to enter that bilayer membrane, that non polar molecule must lose that salvation shell, the cage of water molecules around it. And once that happens, it enters that hydrophobic region of the core of that phospholipid bilayer membrane.