A former Miami Beach cop has been reinstated after arbitrators successfully argued a positive hit for cocaine on a drug test was caused by a homemade sexual enhancement cream.

Homicide Detective Reinaldo Casas tested positive for cocaine during the random test, despite his insistence he’s never done the drug.

The Miami Herald reports Casas blamed the positive hit on a cream concocted by “an old Cuban guy.” The homemade Vaseline-like cream was packaged in an unmarked purple container. The cop said of the substance he rubbed on his genitals, “it worked” — though he didn’t know what was in it.

The cop will not only be allowed back on the force, he’ll be given back pay for the time he was unable to work after his termination.