Depends on location
I=this is a question I am asked daily.
Here is my reply depending on the area of injection. If placed in an area with a lot of movement ( lips) expect 4-8 months, if its around mouth lines(NL) expect 6-10 mo if in areas of low motion (cheek, forhead) 9-12 months. Think of it as motion breaks f=down the produce faster than if the product is sitting stationary and dissolving.