Which hormone would pass directly through the plasma membrane of a target cell?

Fat soluble hormones can pass directly through the cell membrane. This is because the membrane is phospholipid in nature and hydrophobic heads are located at the outer area, the lipid loving compounds are thus easy to translocate through the same. Small hormones can also pass through the membrane because they can fit and pass through the spaces between the phospholipids. 

Ithink it true i might be wrong so don't take my word that its true.