What happens if you stop going to the monthly IPL hair removal treatments?

The area which has not been treated will continue to have hair growth as normal whereas the area which was treated effectively with the IPL will not have hair growth. In order to receive the full benefit of the IPL treatments you should continue with the treatments on a regular basis.

What will happen is absolutely nothing. The hairs that have been effectively treated will remain gone, and any other hairs will continue to grow and be normal. "This answer has been solicited without seeing this patient and cannot
be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."