We have been removing permanent makeup since 2008 and during that time we have observed that permanent makeup often does change color immediately after laser treatment. The color change is associated with a process called oxidation/reduction. It is similar to what happens when a car rusts.
The type of ink used determines whether the color of the permanent makeup will change and before treating it, we do not know whether this will happen or not.
Regardless of whether the permanent makeup changes color after laser treatment, we can still remove it. Often the color changes to a darker shade (from orange to dark grey (see below) and when this happens the darker color makes it easier to remove than the orange color.