The waves are the result of the natural spiral or coil in afro-texture hair being coaxed to clump together and lie in a pattern. Pomades are helpful, but NOT required. However, the hair must be brushed frequently (multiple times a day) in a particular pattern. Finger waves are NOT the same thing.
African American men get waves in their hair by using pomade and carefully styling the waves in. These are called finger waves. White men either have wavy hair, curly hair, or straight hair. When they have wavy hair the waves are naturally occurring.