Because the tissue under the eye is delicate, bruising appears easily and swelling can look worse for the first two or three days before improving across two weeks. Lumps, unevenness, or a Tyndall type bluish tinge from superficial placement may take weeks to resolve and cannot be dissolved the way hyaluronic acid can. Differences between the two sides are common early on. Infection is rare. The result is temporary and further sessions are required to maintain it.
Spots treated with the picosecond laser darken and form a fine crust that lifts within one to two weeks, leaving pink skin that fades over a month. Pinpoint bleeding or small blisters occur occasionally. Pigment can rebound and darken again, particularly on skin that is rubbed or exposed to sun, so daily protection is required. Some spots need several sessions and a few respond poorly. Very rarely the treated area heals lighter than the skin around it.
Polynucleotide injections leave a row of small raised bumps under the eye that flatten within a day or two, and bruising at the entry points is common. Stinging during treatment and tenderness afterwards are usual. Improvement in texture builds slowly across a course of sessions spaced weeks apart and varies between individuals. Nodules and infection are uncommon. The effect is not permanent and courses are repeated.