Facial and scalp injury
heals rapidly. If forehead scar is deep it may persist. But if it is superficial, it may go away. 1 week time is too small a time for complete healing -which may take about 3-4 weeks. I hope you have got your infant checked for any other internal brain injury
of skull bone? If yes,then just wait for 2-3 weeks.
If you have any other concern, please get back to us.