Undifferentiated marketing is using one marketing strategy to go after an entire market, i.e., mass marketing. This does not usually work too well since it is unlikely that every individual will have the same needs. The shampoo that I desire (I am bald) is probably quite different than the shampoo a young woman with a full head of hair wishes to purchase. Do we all want to drive the same kind of car? Some of us prefer a sports car and others an SUV.