Strengths: None, unless you want to hang your hopes on anecdotal evidence.
Weaknesses: There is no research proving that the "active" ingredient in Mederma works as claimed.
Selling products that promise to get rid of scars has become big business. Given how many people suffer from scars (be they from acne, wounds, or even stretch marks), and given how hard it is to get rid of them, it isn't surprising that Mederma is still going strong, touting its ability to reduce the appearance of scars of all types, including hypertrophic and keloidal (both examples of raised scars that are a source of concern for many people).
For more information about Mederma, call (888) 925-8989 or visit www.mederma.com.