Slight puffiness due to overfilling disappears within a few days as the saline carrier is absorbed. The greatest risk is allergy, but this risk is greatly reduced if the patient undergoes pretreatment allergy testing. Allergic reactions may include hives, swelling, rash and flu-like symptoms. Other risks include infection and lumpiness or other contour irregularities. Collagen injections have been implicated in autoimmune disease and connective-tissue disease, but research studies to date have not borne out this claim.
Patients can resume normal activities immediately after treatment.
The duration of effects is brief, but variable. In general, effects will disappear soonest in areas with the greatest muscle movement. For reasons that are not entirely clear, some patients retain effects longer than others, but patients should not expect longevity of results for more than a year and perhaps only for a few months. Dermabrasion Dermabrasion is a procedure that uses a high-speed rotary wheel to scrape off the top layers of skin. Dermabrasion can be performed on selected areas or on the entire face and it can be used in conjunction with other procedures, such as chemical peel or rhytidectomy.