As Endopeel is a 3D isovolumetric myoplasty,myopexy and myotension ,the mathematical product of the 

• height or projection of the butts h
• width ( here to be reduced if we wish to tighten the butts) w
• length ( here to reduce if we wish to lift the butts) L

is the same or constant before and after the procedure.
L x w x h = Konstant

In such case, by tightening and lifting the butts, the projection will be more effective.
If the patient is much more interested about tightening and wishes a discrete projection, we havent to lift the butts too much , to respect the constance of the product.