Can Laser Genesis make surgical scars darker? (Photo)

I have a few small surgical scars on my body and have been going through several treatments to lighten and even out the texture. I’ve had at least 8 treatments already, some are getting lighter and others seem to be getting darker (they were red to start with). Is this just a phase it goes through before it becomes lighter? I’m a little concern now and don’t know if I should continue with the treatment. I would think by my 8th treatment I should have seen some significant improvement. Please help!