Focused ultrasound puts real energy into living tissue, and the list below is read to you before you consent to a block. Common in the first days: redness, swelling, bruising and skin that is sore when touched. Less common: raised welts running along a treated line, patches of temporary numbness, tingling or a heavy sensation from nerve irritation, pigment change in the treated field, and visible asymmetry between the two sides of the face while everything settles. Rarely, the fat pad under a treated area loses a little volume, which is the specific risk a director weighs on a thin face.
Your history is what shortens that list. Tell the director about medication and supplements, any bleeding tendency, filler, threads or previous energy work in the same field, implanted electrical devices, metal in the treatment area, and any record of keloid scarring or pigment trouble. Because this platform aims by hand, the examination beforehand is doing more work than it would on an imaging device, and a rushed one is a poor trade.
Afterwards, contact the clinic promptly if pain climbs after the first days, if redness spreads outward, if a numb patch shows no sign of receding, or if one side of the face moves differently from the other. One of the three medical directors is on site through clinic hours, so a worried patient is examined in person and never reassured by message alone.