I suppose if made soluble and rubbed into the skin, then meth could be absorbed through the skin pores, but this is a really difficult and fully impractical way to get high. No one would use it this way. Are you asking because you came into contact with meth and are worried about it getting into your system? If that's the case you don't have much to worry about. The bigger worry would be if someone was smoking meth and you got the second-hand smoke. Then you would probably be exposed to minute trace amounts of meth.
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