Bruising is frequent under the eyes because the skin is thin and the vessels sit close to the surface, and discoloration can take up to two weeks to clear. Swelling in this area often persists longer than elsewhere. Small lumps, unevenness, or a bluish Tyndall tinge can appear when material sits too superficially, and adjustment is sometimes needed. Injury to a vessel around the eye is very rare but requires urgent care. The material is absorbed over months, so the result is not permanent.
Microdroplet botulinum delivered through many shallow points leaves temporary papules, pinpoint redness, and small bruises for a few days. Pore size and oiliness change gradually rather than at once. Because the muscle fibers close to the surface are partly relaxed, a slightly stiffer or heavier feeling of expression can occur and settles as the effect declines over roughly three months. Infection is rare. Repeat sessions are required to hold the change.