DMSO (Dimethyl Sulfoxide) is a wood product which has been around for a long time. It has many properties valuable to plastic surgery patients.I was first introduced to DMSO in the early days of tissue expansion by Dr. Gordon Sasaki, originally 5th generation Hawaii but now from California. Dr. Sasaki is one of the most brilliant plastic surgeons, and used DMSO to take away pain during the tissue expansion in women who had mastectomies. One of its many properties is that it is both anti inflammatory and relaxes elastin fibers during tissue expansion, and therefore is very valuable both in reconstructive and cosmetic plastic surgery. The world's expert on DMSO is Dr. Stanley Jacobs from the University of Oregon, and whose formula for DMSO I have used for over 20 years. DMSO can be used pre-operatively to open choke vessels before a facelift, tummy tuck, breast lift and/or reduction. Choke vessels is a term given to the redundant blood supply to all the tissues of the body. The natural opening of these redundant blood supply is done when the blood stream is low on oxygen, i.e. when someone is being choked. This increased blood supply brings oxygen to tissues for wound healing and it also brings white blood calls to tissues in an increased number to take away injured tissue and cells, decreasing swelling, bruising, and inflammation. These same choke vessels can be opened by the chemical DMSO.DMSO is also a world renowned trans dermal, and therefore spraying it on the skin is just as effective as drinking it. DMSO is used by neurosurgeons, orthopedic surgeons, and others who deal with inflammation and swelling. The majority of the DMSO in the world is used by trainers and expensive horse owners because it is actually a horse liniment, but the raw DMSO that someone can get from a veterinarian warehouse needs to be modulated by using an emolliant such as Urea which decreases the irritation to human skin. DMSO can be used post-operatively to decrease bruising and swelling. It is also FDA approved in a specific treatment for interstitial cystisis. The brand name for this drug is Rimsol-50.As far as a comparison between the value of DMSO vs. Arnica, I have never seen any scientific studies on the subject. However, my personal anecdotal experience is that DMSO works faster and is generally more effective.