The swelling usually occurs after the application of hyaluronic acid. After the application, visible piercing spots are also normal. Both occurrences disappear in a few days.
After the use of hyaluronic acid, the skin can become red on application sites which also goes away within days.
At the application sites, the surface of the skin can remain uneven, changes in the form of clods can be felt. This too disappears in time; however, an uneven surface can persist for a longer period of time, even for months.
The filler can be visible through a thin skin for a certain period of time.
Our body and its appearance are anatomically asymmetrical. Occasionally, the exact symmetry thus cannot be achieved with fillers; however, asymmetry can occur due to a different reaction of the body on one side. Correction of asymmetry can require additional injections of hyaluronic acid.