What is the long term prognosis for using temporalis fascia over the tip to thicken thin skin?

I would need to know why you believe the skin needs to be thickened.  It is much more common for the opposite problem to exist, that is, skin on the nasal tip that is too thick.using a fascia graft on the tip could make the tip look fat, and I can't imagine the situation where it would be worthwhile.  Some surgeons use it on the bridge to camouflage imperfections, but I have never found it necessary.

Temporal fascia is a very useful graft for increasing the thickness of the soft tissues during rhinoplasty. In patients with thin skin, it can be used to help camouflage irregularities of the bone/cartilage framework. It provides subtle volume augmentation when used and can also be combined with cartilage, in particular diced cartilage (diced cartilage-fascia), for even greater volume augmentation. Temporal fascia being your own tissue and also being thin, typically revascularizes well in the nose and should be very stable longterm.

Hello,Great question.  Temporalis is probably the best option for thickening your skin because it tends to have a very smooth and natural contour when the edema has resolved, and it's very safe.  Implants and injectables are more likely to have infectious complications and even contour irregularities.  Cartilage grafts are also effective but are better for structure and are more likely to be visible through thin skin.  I think temporalis fascia is probably your best option. Good luck!