Perhaps the most stunning feature of the photos is how quickly the face is damaged.

That speed isn’t surprising to addiction experts.

Meth, for example, can cause small blood vessels around the face to constrict, says A. Thomas McLellan, director of the Center for Substance Abuse Solutions at the University of Pennsylvania…

Both meth and heroin are often cut with sugar, McLellan explains. “And you get acne from oily or sweet things, so if you’re injecting the sugar into your veins it’s even more direct,” he adds.