1) Dermatologic drug 
Mederma is a topical product used to improve scar appearance. It is a gel based on an onion extract and produced by Merz Pharmaceuticals of Frankfurt, Germany. Mederma`s marketing claims it can make scars `softer, smoother, and less noticeable`. Generic versions are sold under the name Cepalin. == Effectiveness == One 2006 clinical trial found ......