Does Watering Down Sculptra Decrease a Lot of the Risks?

Yes.  Proper dilution of Sculptra drastically reduces its risks.  Naturally, complications can occur with the use of any injectable filler.  Fortunately, such complications occur only rarely.

Sculptra is always diluted as it comes as a powder which must have a liquid added. Over time the amount of liquid that doctors choose to add increases. Both sterile water and lidocaine, anesthetic, are added. This mixture is not a solution and some Sculptra can accumulate if not mixed well.  Lumps can form.  Particulate material could theoretically block small arteries but I am not aware of this clinical risk from experience or conversation with colleagues. I avoid the  high risk areas for vascular occlusion to play it safe.

Watering Down Sculpta DOES decrease some risks, but not all.  We call it 'diluting'.  

Diluting Sculptra does reduce the risk of lumps and bumps (ie nodule formation), but it is unlikely to reduce the risk of vascular injury.  The mechanism of vascular injury from injectables are related to the needle inserting into a blood vessel.  The risks are quite rare with sculptra.  There is a higher likelihood with hyaluronic acids such as juvederm and restylane.

Always make sure you go to an expert injector to avoid risks.  if you are in the Beverly Hills area feel free to come see me.