Dermal filler used in the cheeks can make an enormous different to the way that light reflects off the face. This is something that makeup artists understand very well. They do this every day using highlighter and bronzer to create light and shadows. However the same can be achieved by using dermal filler to change the shape of the cheeks.
Cheek fillers are a very common procedure aimed at restoring lost volume in the mid-face as a result of bone loss, atrophy of fat compartments and sagging of the tissues as a result of ageing.