Prior to injecting Sculptra, is it normal protocol to microwave a wet washcloth and wrap all Sculptra filled syringes in it?

I would not say that it is normal to wrap Sculptra filled syringes in a warm washcloth prior to injection, but some physicians may do this because they believe it helps with the injection process by decreasing clogging of the needle.  This warming procedure should not affect the results of the treatment.  

It helps to gently warm Sculptra syringes as Sculptra can clog the needles very easily. Not all injectors use the method of warming but it can be helpful.RegardsDr. J

The hydrated Sculptra was probably stored in a refrigerator and so the warm clothes were probably being used to bring the Sculptra back to room temperature. I don't think there is any issue with this although in our clinic we prefer to use heating packs to bring the Sculptra back to room temperature.