Injection technique: Sculptra is injected into the deep dermis or subcutaneous layer with a 25G or 26G needle with sterile single-use syringes. The depth of injection and quantity of Sculptra used depend on the area to be treated and the result expected. Because the treatment effects for Sculptra appear gradually over a few weeks, for the first treatment session a limited correction should be performed. The patient should then be re-evaluated no sooner than four weeks post-treatment to determine if additional correction is needed. See Treatment procedure under Cautions for Usage for additional information.