Increasing lip volume using hyaluronic acid is a procedure to be carried out at a medical facility.
To retain a natural look, it is helpful to avoid overly increasing the lip size as doing so would achieve the opposite of the desired effect.
Hyaluronic acid allows a fleshy mouth to be achieved, plumping up the lips to give them a pretty curve.
The result is instant.
There may be a need to wait a few days to assess the final outcome. By that time, reactive swelling will have completely disappeared