Use the thinnest needles you can find. Sizes between 28G - 31G are the thinnest needles on the market. A higher number means a thinner needle. The thinner the needle, the less you will feel it. It's also good to choose needles with a length of 6 mm or less. Longer needles tend to go too deep, and that can be painful.
We recommend the following syringes for apitherapy:
EasyTouch, 31G - 1cc/mL - 5/16" U-100
Comfort Point 0.5 cc 29g 1/2 inch 20pk
Packs of 20 0.3cc 31g 5/16 inch
Before injecting bee venom solution clean the injection area.
These pads are handy for that: Alcohol Prep Pad
Never do apitherapy on your own, a epinephrine autoinjector can help in a severe allergic reaction. Get a prescription and have one just in case. Explaining that your are doing apitherapy will help getting a valid reason.