Too Young for Ulthera?

Your age is definitely not a negative, in fact it helps Ultherapy be even more effective. Your body is producing more collagen at a younger age which helps Ultherapy's effectiveness.

No, 20's is not too young. In your 20's you are still producing your own collagen, so it would work great for prevention!

I prefer to do Ultherapy after there is evidence that the treatment can help improve a situation that already exists, rather than treating before the condition occurs. It's not an inexpensive treatment,  there is some degree of discomfort, and although very safe, there are risks and I would rather not subject this procedure on a young person who wants to try to prevent the aging process. If at 29 years of age, there is some sagging that has occurred already; if there is some formation of smile folds from cheeks that have started to fall, or upper eyelids that are "hooding" from a lowering forehead, then, that patient might be considered a candidate for Ultherapy, and this would be determined during an examination.