Side effects with hyaluronic acid (HA) based dermal fillers are normally short-lived and often relate to the injection procedure. Complications are rare when the procedure is carried out correctly and by a professionally trained aesthetic practitioner. Be sure to report any redness and/or visible swelling that lasts for more than a few days or any other concerns to your practitioner or doctor.
Common side effects include:
Bruising
Redness
Swelling
Pain
Itching
Less common side effects:
Infection
Abscess formation
Vascular Occlusion
Local tissue necrosis
Granuloma formation
Allergic reaction
Acne
Skin discoloration
Rare but serious side effects related to incorrect injection procedure:
Scarring
Blurred vision
Partial Vision Loss
Stroke
Blindness