I was told today that collagen fillers like sculptra and Bellafill are a waste of time for those over 65?

I respectfully disagree with the nurse injector that you met with. I studied and published a paper on the nonsurgical rejuvenation of the aging face using Sculptra for restoration of soft tissue volume in patients from 2007-2009.  The age range of patients in my series was 40 to 78 years. Because of Sculptra's unique mechanism of action when using it for nonsurgical facial rejuvenation, it requires meticulous injection technique with special considerations for optimizing outcomes and minimizing adverse events. Many of us who Sculptra's in our practices understand that it is not the real age of the patient that contributes to its effectiveness, instead it is the condition of the skin and the nutrition of the patient. To use Sculptra effectively, many of us stress that the patient should optimize the condition of their skin with skin care products and laser, optimize their nutrition,  and tighten their skin with energy devices like Uthera, no matter what their age. 

While it is true that a collagen stimulating filler such as Sculptra or Bellafill, will not have the same stimulatory effect in someone over 65, as they would, say, in someone under 35, for example, that is largely because our inflammatory response and wound healing abilities tend to decline with age in everyone.  This does not mean that these collagen stimulatory fillers are completely without benefit for someone like yourself, particularly, if you are trying to avoid a surgical procedure that may involve medical considerations, more expense, logistical considerations, recovery time, etc.  It certainly is the case that an older patient's nutrition should be optimized before using Sculptra or Bellafill, to optimize the benefit that she may experience from this treatment.  These injectables also pair well with skin tightening and collagen stimulatory noninvasive treatments such as Ultherapy.

No. To me the most important issue is not age but rather the quality of skin and tone.  There are some older patients that have maintained excellent skin tone and respond nicely to Sculptra.  In face many 65 yo in my practice have had some form of a facelift in the past and sculptra does excellent in those patients.Hope this helps.  Good luck.