If the scar is negatively affecting your level of self-confidence, you may be wondering whether you should try using the over-the-counter topical cream Mederma. This product lists its active ingredient as Allium cepa, or onion extract. Read on for a Mederma scar cream review. Show Mederma's Effect on ScarsIf you have a scar on some part of your skin—such as an acne scar, a surgery scar, a burn scar, or a scar from a cut—you might feel embarrassed by it. This may be especially true if it's on an area of skin that tends to be exposed. Perhaps you think it looks unsightly or maybe you're simply tired of explaining what it is when people ask you about it. Mederma scar cream is based on using onion extract. Onion extract has been shown to have anti-inflammatory properties and improve the collagen organization in a rabbit ear model. However, there are no human studies that show onion extract improves the appearance of scars more than petroleum-based ointments. Mederma is safe for those ages 6 months or older. It's not meant for open wounds—it should be used only when a wound is closed and either the scab falls off or the stitches are removed. But is it worth the money? Will Mederma scar cream help your scar become less noticeable? Despite what all the commercials say, the research doesn't support it is better than the usual treatment. Pros
Cons
A Mederma cream that contains a sun protective factor (SPF) of 30 for protection against damaging ultraviolet rays is also available. Other products in the Mederma scar care line include Mederma Quick Dry Oil, Mederma Advanced Scar Gel, Mederma PM Intensive Overnight Cream, and Mederma for Kids. What Research Says About MedermaAccording to a small study with 44 participants published in 2012, Mederma gel appeared to improve the overall appearance, softness, and texture of scars if applied via gentle massage three times a day for eight weeks on new scars and three to six months on old scars. While this study was blinded, it compared scars treated with Mederma gel with scars on the same individuals where no treatment was given. Scars form on the skin through a three-stage process and this process can last up to two years after an injury. Many scientists are studying this wound-healing process in an attempt to find something that will make scars less visible. It is widely recognized that moist wounds heal 50% faster than wounds that dry out and develop a scab. Although the previously mentioned study found some benefit, other studies have not replicated those findings when onion extracts were compared with petroleum jelly, including a study published in 2006 and a study published in 2018. Frequently Asked Questions
Verywell Health uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
Additional Reading
By
Heather L. Brannon, MD Thanks for your feedback! How long should Mederma take to work?Generally, Mederma Advanced users start to see noticeable improvement after about 4 weeks of daily usage, with optimum improvement in 8 weeks.
How long does Mederma take to remove scars?A: Yes, Mederma gel can be used for treating old scars; it will take approximately 3 to 6 months for old scars to improve the condition. These timelines are approximate and can vary among individuals. Mederma gel helps in reducing the scars by making them less visible, softer, and smoother.
How long should you keep Mederma on?For best results, start using Mederma® Advanced Scar Gel as soon as your wound has closed and continue using daily for at least 8 weeks on new scars and 3-6 months on existing scars. Make sure the scab has come off naturally. Don't use Mederma on stitches – wait until any stitches have been removed.
Can you leave Mederma on overnight?Give it the benefit of overnight care with Mederma® PM Intensive Overnight Scar Cream. For best results, start using Mederma® PM Intensive Overnight Scar Cream as soon as your wound has closed and continue using once nightly for at least 8 weeks on new scars and 3-6 months on existing scars.
|