Actually, it was an experiment, which was conducted by US government to find out the effects of psychotomimetic drugs. This one was Oscar Janiger, a University of California-Irvine psychiatrist, giving an artist crayons and doses of LSD, then asking him to draw 9 portraits of himself while under the effect of the drug.
This is what a creative mind can do to a piece of LSD blotter. Blotter Art refers to a highly collectable form of artwork. It steals its popularity from the visual similarities it shares with its' once prolific chemical-soaked cousin. Blotter Art has transcended the underground drug market and is available to art lovers worldwide. It is not illegal, it is art.