Could I see a difference with half syringe injection of Restylane or should I do a full injection? (photos)

I think that it is possible to achieve some improvement in the lips with half a syringe of Restylane, but of course, that can vary by patient.  I would recommend trying half a syringe first and you could always return later for another half if you prefer your lips bigger.  

First off, I would not recommend buying only a half syringe. This means you are sharing a syringe with someone else which is never a good idea. A syringe of filler is 1/5 of a teaspoon. If you choose to use half of a syringe, it will give you a very subtle change and a more natural look. If you are wanting a noticeable change, I would recommend a full syringe. You will instantly swell after injecting lips but you can look when finished with half the syringe and decide at that point if you want more.