Hyaluronic acid (HA) is a naturally occurring glycosaminoglycan. It is a structural component of the intercellular space wherein, by binding water, it serves to maintain the correct volume and elasticity of tissues. There are two types of hyaluronic acid: animal- origin and acid synthesized by respective bacteria cultures. Standard hyaluronic acid is rapidly degraded within 48 hours. Therefore, the creation in 1996 of the so-called stable, not zoonotic origin hyaluronic acid (non-animal stabilized hyaluronic acid - NASHA), which can last from 6 to 18 months, was a great achievement in medical science.
In modern medicine, there are many cosmetic formulations of hyaluronic acid.
The procedure is performed on an outpatient basis; it takes about 15 - 30 minutes.
Before surgery, anesthesia is applied using anesthetic skin creams or (especially for contouring and lip augmentation), of injections similar to dental anesthesia.
When the anesthetic begins to work, the doctor injects hyaluronic acid in a predetermined area of the patient's face.
Sometimes, immediately after treatment, gentle redness, swelling or itching may appear at the site of application of the formulation. These reactions are of short duration and usually disappear within a few days. In case of lip augmentation, the swelling may last for up to 7 days. The patient may feel as if their lips are uneven. Therefore, the result immediately after the procedure is not the final result. Sometimes it is necessary to refine the optimum effect within 2 - 4 weeks after surgery.
The effects of administration of hyaluronic acid last 12 to 18 months.