Will I see a difference with 1/2 ml of Juvederm in my lips?

It depends on what your expectations are. Remember that these things cannot be done cheaply. You need the right amount of product to see results.

Thanks! I always start patients at 1 mL. The best plan always includes a full correction of the problem at hand. You are likely to be dissappointed with only a partial correction.Good luck. Dr. ALDO 

You will see a difference, but it will depend on the final results you want to achieve. I prefer to use a micro cannula to inject the lips to prevent bruising. Look for a cosmetic dermatologist or plastic surgeon who is an expert in fillers. 
I hope this helps.

You may notice a difference with 0.5ml but it will be a conservative change.  Most patients begin with 1ml.  The wonderful thing about fillers though is that you can start slowly and add more product as you desire.  Keep in mind that swelling is common with lip injections and it can take up to two weeks to see your final results.

the more you use in the lips the bigger they will get. what matters is the type of look you are going for and the filler choice.  I suggest you see an expert.  Best, Dr. Emer.