What is the best lip lift? Will it leave scar?

Thank you for your question. I suggest that you move forward and consult with a board certified facial plastic surgeon to determine your candidacy. Lip lifts and injectables are excellent techniques for lip enhancement.
Best wishes,

Hello samanthaLip augmentation patients today have a wide selection of injectables and implants made of natural and synthetic materials.
With such a wide variety of treatments and procedures available, the most important decision lip augmentation patients make is selecting the best doctor. The most skilled and highly trained expert will help the patient choose the option that is right for them. And, of course, the most skilled doctors will provide the best results with that filler or implant.

Very hard obviously to answer your question without any pictures or an in person consult.  I specialize and have been doing for 25 years vermillion gullwing lip lifts as can be seen on my site. It is an excellent choice for the right patient . If the surgeon is meticulous with good skills scarring in most cases should be minimal