Thank you for your question.
VASER uses ultrasound energy to breakdown the fat before it is removed by suction.
It is typically used in hi-definition liposuction procedures and does not necessitate admission to hospital.
Most liposuction procedures can be done as a day procedure, meaning you can go home the same day. In Singapore, if more than 2L of fat is removed you will need to be admitted.
Hope this helps!