What Should You Know About Cannula Subcision?

After the area is cleaned and numbed, a clinician makes a small entry point and guides a cannula under the scar. Its rounded tip is designed to move through the tissue plane and loosen fibrous attachments without repeatedly puncturing the scar surface. This approach is mainly considered for rolling or tethered depressions; it is not a universal treatment for every acne-scar type. Bruising, swelling, tenderness, temporary numbness, bleeding, infection, and uneven contour are possible concerns.

Share medicines, supplements, allergies, bleeding problems, active skin infection, and any history of raised scars before treatment. Follow the clinic’s instructions about cleansing, pressure, exercise, heat, and skin products. Keep the entry site clean and avoid picking at crusts. A clinician may assess whether staged treatment or another scar procedure, such as laser treatment, would better match the scar pattern.

Contact the treating clinic promptly for spreading redness, increasing warmth, worsening pain, pus, fever, persistent bleeding, or swelling that is rapidly increasing. Seek urgent help for breathing difficulty, facial swelling, faintness, or signs of a severe allergic reaction. Arrange review if a new firm lump, marked asymmetry, or persistent loss of sensation develops.

Ask which scars are tethered, what result is realistic for their depth, whether cannula or needle entry is preferable, how aftercare will be handled, and when another treatment might be considered.