This is not a gel. It'a lotion containing two unique ingredients: benzocaine and ginseng root. I'm guessing the added ginseng root is for stimulation, but the only way it "stimulates" is through a gritty texture.
The most unique element of this "gel" is the ingredient benzocaine, which produces a numbing effect on the skin and would probably account for the name Sex Prolong Gel. Although this may be effective in combating pre-ejaculation, I recently discovered another advantage... for those of us whose jaws get tired of sucking a cock that just won't cum, this product produces a numbing effect on the mouth that makes continuing the task a little easier.