Results from Juvederm are, largely, immediate. The product does, however, continue to absorb water from the tissues over the first several days following injection, giving a little more "bang for the buck" than is seen initially. This effect is more pronounced with Juvederm Ultra Plus than with Juvederm Ultra.
Juvederm is a very immediately gratifying medication in that most of the effect is instantly visual. However, if you have very deep wrinkles they may continue to improve over several weeks as the skin elasticity reacts to having new support under the wrinkle and the surrounding tissues mold to acommodate the volume infusion.