Collagen is the oldest filler. It has been around for about 20 years. There is a slight chance for an allergic reaction with collagen, so allergy testing is done prior to performing collagen implants. Depending on the patient, collagen lasts 1-3 months. Results after the injection are apparent immediately.
Restylane, Juvéderm, and Captique
These are all examples of hyaluronic acid fillers. These fillers have been around for over 5 years. Hyaluronic acid fillers are injected into the skin in the same way as collagen. They are more durable than collagen which means the results last longer, often 3-9 months. Since our own bodies make hyaluronic acid, there is very little chance of an allergic reaction. Currently, we only have the Restylane brand but may consider carrying the others in the future. Results after the injection are apparent immediately and may improve even more 1-2 weeks after the injection.