TIL SonoPrep is a method of painless drug administration through human skin by rendering the skin permeable to fluids via the use of ultrasonic wave. The skin goes back to its normal state within 24 hours. news.mit.edu Submitted by ThichXemHen t3_xvhx3b on October 4, 2022 at 3:22 PM in todayilearned 27 comments 341