What can I use on my legs for age/pigment spots when lasers are not cutting it?

The first question is:  what kind of laser is being used on your legs?  And who is doing it?
We have seen numerous clients who have had poor results elsewhere, usually from either inappropriate treatments or wrong settings on the lasers used.  Once they are treated properly, their condition resolves.
It's hard to say more without photos.  I would recommend an in-person consultation with a qualified professional with a good track of success.
Hope that helps.