There has been a recent growing trend of needle-free filler injector pens. It is concerning that the use of such devices has gone viral on various social media platforms, including TikTok, with young women and even children injecting themselves with filler from injector pens, most commonly in the lips and the face.1,2 Many of these filler pens are readily available for any member of the public to buy across different websites and apps online, including Amazon and eBay.
This article aims to explore the mechanism and science behind needle-free injector pens as well as their use both inside and outside clinical practice.
Needle-free injector pens are commonly used in the management of diabetic patients who are treated with insulin and have been widely used in other areas of medicine, such as with vaccine administration. The mechanism of action of a needle-free injector works by forming and…
