In this series of images I was exploring how it is possible to purposely obliterate images on film using a potent mixture of chemicals. For these images, I boiled silica gel, lemon juice and potassium ferricyanide (a photographic bleach). I enjoy the abstract colours and shapes which arise from these experiments, though I felt particularly bad boiling a film which I had found in a camera at a car boot sale. Who is the person in the photograph and why is he holding his head? Will I ever know?