Although this is a new idea in the United States, it was tested in Europe over 20 years ago. In order to combat the AIDS epidemic that was spreading across Europe, France allowed pharmacies to dispense needles without a prescription and implemented needle exchange programs. In 1996, they began a pilot program of syringe vending machines, similar to a coin-operated vending machine. The first vending machines were placed in Marseille due to its high occurrence of AIDS caused by sharing of needles. The results of their study was published in 1999. They found that when the availability of syringes increased, more and more people began to purchase sterile needles. It also provided a discrete way for people to purchase needles without having to feel embarrassed going into a pharmacy. They theorized that with greater access to sterile needles, they would expect to see a reduction in bloodborne pathogen cases. 
And sometimes the problem isn’t that the job doesn’t deserve your level of care but that you just need some balance. Caring is good; getting burned out or carrying an unreasonable burden isn’t. I love law, but I know that losing cases and not getting everyone the justice they deserve would devastate me. I don’t want to call that caring “too much,” but it is unsustainable and unrealistic. I think ideally, you should be able to care while still having realistic expectations. But that isn’t doable in all jobs, for every person. Some jobs are really demoralizing.
Needle injections are great in more superficial areas of the lips, such as philtral columns, vermillion border, and the finer lines around the lips. When more "inflation" of an area is needed micro-cannulas have proven to be a better choice.
The advantages of micro-cannulas include less bruising, less swelling, less pain. Micro-cannulas also allow for smoother contouring in areas such as jawline, cheeks, chin, tear troughs, brows, and even the body of the lips- any area that require deeper injections for sculpting, contouring and "lifting."