The full effect of Sculptra generally lasts two years. I would expect around the two year point you might need more Sculptra injected. Of course there is always individual variability with aging and weight loss which may affect how much Sculptra you will need.
Sculptra is a great facial injection and there is absolutely no age limit. It may take more Sculptra just as it would take more filler with an older face to replace lost volume. Younger patients generally need less volume replaced but it is equally effective on older patients. In fact, it is...
If you are taking coumadin, you will have a greater risk of bleeding and bruising from your Sculptra treatment. As a result of the increased risk of bruising, you may also experience some more pain and this may make it challenging to massage the treated areas.