All fillers work well with African American skin, and all skin types. Some fillers are thicker, more viscous, than others. The thicker fillers, like Radiesse, have the benefit of lasting longer, and staying in place better, than thinner fillers like Restylane. However, they require more injector experience and care for filling under the eyes than thinner fillers. The thinner the skin is under the eyes the more it helps to use a thinner filler to help prevent irregularities.
The key to the best results under the eyes is to inject the filler very smoothly just below where the eyelid meets the cheekbone, and to inject it as deeply against the bone as possible. All fillers will work well here, some just last longer than others.