Thank you for your question. Depending on the amount of fullness you desire in your lips, 1cc of Restylane should be enough to plump the upper and lower lip. Occasionally, a .5-cc syringe is all that is needed to create a natural, fuller lip.
When meeting with your physician, you may want to bring in some photographs and view his/her patient before and after photographs together, so that you may visualize together your goals for your lips.
Best wishes on your treatment.
David C. Mabrie, M.D., FACS