While it can be a little costly upfront, the rewards are great and long-lasting (up to three years). When you meet with one of our registered nurses at Colair, they’ll be able to give you a better idea of how many vials you’ll need, most folks need approximately one vial for every ten years of life. So, if you’re fifty, that’s approximately five vials, though truly, it will depend on the condition of your skin, as you may need less. This process may take more than one appointment, due to restrictions on how many vials can be injected at one time.