Common side effects after Voluma injection are temporary swelling, bruising and tenderness. These symptoms will typically resolve within one week. The product may feel slightly bumpy and may be massaged into tissue gently to disperse. Rare side effects include the formation of hard lumps or nodules, or occlusion which is the injection into a blood vessel. If there is a persistent hard lump or discoloration and tenderness that worsens after injection, call your board-certified expert injector immediately.