A trial of the "dermatology assist tool", unveiled at the tech giant's annual developer conference, Google IO, should launch later this year, it said.
The app has been awarded a CE mark for use as a medical tool in Europe.
A cancer expert said AI advances could enable doctors to provide more tailored treatment to patients.
The AI can recognise 288 skin conditions but is not designed to be a substitute for medical diagnosis and treatment, the firm said.
