When does the face change the most dramatically?

Question:

What stage does the face change most dramatically? What is a clear indication of stage 4?

Thank you. 

Answer:

Stage 4 is when the jaw line grows more square. It is also the stage when facial hair grow more and even if you shave, the texture of your skin does change.

The earliest indication of stage 4 is a strip of hair growing from the groin up to the belly button.

Response:

Got it. Thanks!