It is done in about three sessions at four-week intervals. The overall impression of the face tidies up over one to three months, because it prompts the skin to make collagen and the result takes time to build. Keeping to the schedule stops the stimulus from stacking and lets it accumulate evenly.

No single area changes shape; the whole face improves gradually over one to three months. Being close to a liquid, it spreads thinly across the face and creates no volume at any one point. That makes it hard to point at what changed in before-and-after photos — it reads as an overall impression.

Sculptra places particles at a specific site to support and lift that spot. Gouri is close to a liquid and is spread across the whole face, so it suits raising the overall impression rather than filling an area. For a distinct hollow choose Sculptra; for a face that generally looks tired, Gouri.