If the cut (incision) was closed with stitches, it will probably take about 4 weeks to completely heal. If your incision is left open, it may take from a few weeks to several months to heal. After the incision has healed, you will have a scar where the cyst was removed.
When a wound is deep, or when it tunnels under the skin, packing the wound can help it heal. The packing material absorbs any drainage from the wound, which helps the tissues heal from the inside out. Without the packing, the wound might close at the top, without healing at the deeper areas of the wound.
Wound care instructions from your doctor may include wound repacking, soaking, washing, or bandaging for about 7 to 10 days. This usually depends on the size and severity of the abscess. After the first 2 days, drainage from the abscess should be minimal to none. All sores should heal in 10-14 days.