synthol

Site Enhancement Oil (SEO) is a liquid substance, usually a mixture of oils, used by a few bodybuilders to increase the apparent size of some muscles. The effects of SEO are purely and solely cosmetic. It is injected either under the skin or between the muscle fibers. Many doctors advise that use of SEOs is extremely dangerous, if not potentially fatal, as injection into a major blood vessel can cause embolism, leading to heart strokes, respiratory crisis and/or permanent brain damage if SEO traces find their way into cerebral vessels.SEOs work by filling the muscle up with an oil substance. It is site injected, that is, it is injected directly into the muscle whose size is to be increased. SEO is usually really only used to 'top up' a muscle that is not quite up to standard with the rest of the body, and once the use of SEO is stopped, all gains are lost, because the oil is soaked up into the muscle.
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