Most people know that heroin is a dangerous drug not to be messed with. The way that most users take heroin can cause serious damage. Since there's no way to find out the purity of heroin that's sold on the street, shooting up could kill you just like that.
Pure heroin is a white powder that tastes really bad.
Most heroin sold on the street can vary in color from white to dark brown because of where it comes from. The heroin available on the street is much more powerful than it was 20 years ago. The type of heroin known as Black Tar comes from Mexico, and is popular in parts of the United States. Black Tar is either sticky or hard and looks like roofing tar. It's usually dissolved and mixed with other liquids before being injected into the user's vein.