How soon after having laser ipl hair removal is it safe to have microdermabrasion done on my face?

I have had ipl laser hair removal done on my face. However, I am also keen to have some microdermabrasion done to reduce my acne scars. I am wondering what gap to leave inbetween having these two treatments?

How long after lazer hair removal until the hair begins to grow back?

My husband has had lazer hair removal on his neck to prevent ingrowing hairs. It has worked well however, he has a line where his beard starts along his jaw line. This is fine for the first half of the day, but by the end of the day he looks like he has shaved it in like a George Michael wannabe.
When can he expect this line to fade??