Technically speaking our Moly is molybdenum disulphide, which is an inorganic compound composed of molybdenum and sulfur.
Also known as MoS2, it's a lubricant's version of Popeye's can of spinach, or Roger Ramjet's proton pill...in other words, it kicks rears and doesn't even bother taking names. We've heard Chuck Norris uses MoS2 as a deodorant when he's feeling froggy.
Appearance is similar to graphite. Widely sold as a solid lubricant and used as an additive for countless lubricants. MoS2 excels as a lubricating material due to its layered structure and low coefficient of friction.
In fact, MoS2's shear strength increases as the coefficient of friction increases. This is called superlubricity.
Molybdenum disulfide is found in many oils and greases, and also in polymers like nylon, Teflon, and Vespel. Even ski waxes can be found containing MoS2.
Most major brands are using Moly as an additive in applicable lubricants, and rightfully so. It is, after all, a super lubricant!