What are the unique advantages and features of Density High?

Density High is widely known for its effectiveness, so while it certainly works for everyone, I suspect there must be specific reasons why people choose it, unlike other lifting procedures such as Ulthera or Shurink. I don't have much fat on my face, so my jawline hasn't become very defined, but my overall skin elasticity has decreased. However, I've heard that other ultrasound lifting treatments can make my cheeks look even thinner, so I'm afraid of that and haven't been able to get any procedures yet. If my cheeks sink in any further, I'll literally look like a skull. I've heard that Density High works by naturally replenishing my skin's collagen, so do I really need to worry about my cheeks sinking? I understand that naturally replenishing collagen takes time, but how many sessions would I need to see results like firmer skin and a neatly defined facial contour? I would also appreciate recommendations on how many sessions are typically included in a package, and whether there are any other skin boosters or treatments that pair well with Density High.