Snippet from the article:
In a move that could spell disaster for the lollipop industry, scientists have reported progress in designing pain-free vaccines that people might be able to use at home. Someday that might mean fewer jabs at the doctor’s office â€” and fewer crying kids needing a sweet to comfort them.
The Band-Aid-like patches, coated with microscopic needles, generally don’t hurt. Moreover, they may actually work better at delivering vaccines and some medications, according to recent research.
Read the rest of the story at LA Times — Microneedles could replace the syringe
While not hair loss related, I wonder if these could eventually be used at the start of a hair transplant to remove any and all pain from the initial injections. Regardless, even as a new way for delivering vaccines, it’s worth reporting here.