When material refracts light from the deeper layers of the skin, blue wavelengths will be bent back outward and thus result in the bluish discoloration we see when fillers are injected to close to the surface. Good placement avoids this problem, but I have personally seen cases from other physicians where products have migrated upward after many years. Strange, I know.
Unfortunately, the only way to fix Tyndall effect is to remove the problem and lasers will not remove the filler. Depending on the filler, there are different treatments, but the one everyone is most familiar with is hyaluronidase for hyaluronic acid fillers (restylane, perlane, juvederm).
I hope this helps.