Can I use Derma Roller and Latisse (bimatoprost) to induce pigmentation of depigmented scar? (Photo)

I have a white scar on the areola which is much darker of course. I heard that dermarolling alone can help regain pigmentation. And Latisse can also pigment the skin. Can I use dermaroller (bought online) then apply Latisse to get some color back? And will dermarolling cause more injury to the scar or a bigger scar?