As Dr Chua CY has pointed out, Vmax is just a brand. All true HIFU machines are designed to lift and firm by targeting certain layers of the skin and SMAS (above muscle layer).
Sessions may be split up if your skin is unable to take that many shots in a session or based on the clinic/ doctor’s preference.
Personally, I complete the entire treatment in a single session if possible.
Do also be careful of doing HIFU treatments other than in clinics as some “HIFU” machines may not have been HSA certified.
Hope that helps.
All the best!
