Using 3-D scans, scientists analyzed the faces of healthy men and women of different ages. They found that as we age, bones in the skull shrink, sink and slide around.

Does skull size change with age?

Results demonstrate significant adult skull shape changes with increasing age. ... Males revealed the most significant shape changes with age, particularly in the outer cranial vault, inner cranial vault, anterior cranial fossa, and middle cranial fossa.

What age does your skull fully form?

When babies are born their skulls are soft, which helps them pass through the birth canal. It can take 9-18 months before a baby's skull is fully formed.