Tiny injections along the hollow beneath the eye bruise easily, and the area can look puffier during the first week before settling across two weeks. Firm spots or a fine ridge may be felt as the material integrates, and superficial placement can show a Tyndall type bluish shade through the thin skin. Small differences between the two eyes are usual. Infection is uncommon, and blockage of a small vessel by the injected material is rarer still, so sudden pain, blanching of the skin, or any change in vision must be reported the same day. The volume is absorbed over several months, so the change is temporary.