What type of local anesthetics are available for lip fillers so I don't feel anything (especially pain) at all during procedure?

Hello,I'm not sure how a practitioner can ever claim that the procedure is pain-free.  Traditionally, this is a very tender area.  Practitioners that are mindful of the discomfort associated with this treatment will rely on numbing cream, icing throughout the treatment, Arnica gel, and a gentle hand combined with comfort measures.  As mentioned, the fillers now come with lidocaine (pain medicine) mixed in with the gel.  Unfortunately, this only helps after the treatment has begun...hence, the use of topical numbing cream and ice.  We choose not to use nerve blocks (dental blocks) as these injections are painful in themselves, this takes more time and expense, and most importantly, the complete lack of sensation causes the patient to not hold their mouth/lips in a more natural way which may hinder the artistic approach.  Choose a practitioner that is mindful of your concerns with pain and offers options to address this.

There are several techniques that can be used to minimize pain during this procedure.  The lips are a very sensitive area to inject.  Topical numbing creams and ice can be used.  Juvederm is available with lidocaine mixed in the product for comfort during injection.  You can opt for a nerve block if necessary which is similar to what the dentist does during dental work.  Speak with your injector to determine what is right for you.

Cannulas, numbing cream, ice, and pro-nox can be used to limit pain during injections. I recommend getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer

The lips and perioral area are, by evolutionary design, a very sensitive area.  Although topical agents provide some relief and most fillers are mixed with or manufactured with lidocaine, some patients are more pain sensitive than others. If the patient is visibly uncomfortable despite the above measures, I will use a nerve block to completely eliminate pain.  The trade off is that nerve blocks can be uncomfortable and the perioral area is numb for several hours afterward. 

In my opinion, injected anesthetic can change the lip with swelling. However you can use topical creams and dental blacks can also be used. Many fillers contain Lidocaine so upon injecting, patient goes numb.