Keeping wounded skin or a fresh scar protected from sunlight is critical to healing and/or how the scar will change in appearance over time. This sunscreen is one way to do that, and it provides avobenzone for UVA (think anti-aging) protection.
However, believing that it works to make scars look better due to its onion extract may not lead to satisfaction because the research on said onion extract is mixed.
On one hand, a comparative study examining the effects of Mederma’s onion extract with plain Vaseline revealed no difference in scar appearance at the outcome, and other studies have disproven Mederma’s claims about onion extract as well (Sources: Dermatologic Surgery, February 2006, pages 193–197; and Archives of Dermatology, December 1998, pages 1512–1514).
On the other hand, there are studies that show Mederma's onion extract may reduce inflammation and impact collagen remodeling which could reduce the appearance of a scar (Sources: The Journal of Clinical and Aesthetic Dermatology, June 2012, pages 18-23; and Plastic and Reconstructive Surgery, July 2002, pages 177-183). Due to mixed results from the research, we've softened our recommendation on Mederma: Although it's not a slam-dunk, it may prove helpful for some people, but you may have even better results from applying a scar-reducing serum loaded with beneficial skin-healing ingredients, so some experimentation may be needed.
This product deserves a good rating for its merit as an effective sunscreen for normal to dry skin and potential efficacy at improving the appearance of scars.
The sun's UVA and UVB rays can make your scar look worse. New Mederma Cream is the only scar product with SPF 30 that can help reduce the appearance of your scare and protect it from sun exposure. Mederma Cream works for old and new scars resulting from surgery, injury, burns, acne and stretch marks. And it's from the #1 doctor- and pharmacist-recommended brand for scars. With Mederma Cream SPF 30, your scar can look better, so you can feel better.
Active: Avobenzone 3%, Octocrylene 10%, Oxybenzone 6%; Other: Water, Allium Cepa (Onion) Bulb Extract, C12-15 Alkyl Benzoate, Dicaprylyl Carbonate, Hydrogenated Lecithin, Caprylic/Capric Triglyceride, Panthenol, Pentylene Glycol, Phenoxyethanol, Butyrospermum Parkii (Shea Butter), Glycerin, Ammonium Acryloyldimethyltaurate/VP Copolymer, Fragrance, Squalane, Methylparaben, Xanthan Gum, Disodium EDTA, Ceramide 3, Sodium Hyaluronate, Butylparaben, Ethylparaben, Propylparaben, Isobutylparaben
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.