Which treatment is better for building collagen in the face and neck: RF Microneedling or Ultherapy?

There is nothing as effective as Morpheus8 RF with PRP at building collagen in the face and neck.  Add Defenage serum and retinA and you have the very best .

I also agree microneeding RF is a much more reliable and effective treatment for stimulating both collagen and elastin in the area treated.  Sculptra can also be used to build collagen depending on the area treated and desired results because it is a completely different therapy and outcome. Ultherapy is unreliable and uncomfortable. kh

If stimulating collagen is your primary goal then Sculptra might be the best option.  This is a series of injections designed to stimulate the production of collage and rejuvenate your skin.