We used to offer 0.5ml as an option for lip dermal fillers. We found that we were having to throw away the remaining filler which made it uneconomical.
We now offer a minumum of 1ml when you have dermal filler treatment. We charge $650 for 1ml of dermal filler ($770 at Cityskin Kew). Often if you use 0.5ml in the lips we will use the remainder in the chin, jawline or cheeks.
We use a strong numbing gel before your lip dermal filler treatment at Cityskin.
Hope that answers your question!
Dr Jonathan Brown