
Suits those who want the whole face to improve gradually rather than at once.
Nothing fills immediately; instead the particles dissolve and the skin builds its own collagen, so it fills gradually. It supports the contour of the whole face from below, which reads differently from filling one area. Two to three sessions a month apart is the standard, and the effect appears over several months.
The standard is three sessions at three to four week intervals. Change shows from one month and the final result lands at three to four, which is how long the skin takes to make collagen as the particles dissolve. Keeping the interval lets each response settle before the next accumulates.