What materials did Giuseppe Arcimboldo use to make 'Air'?

Question

I need to know what materials he used as part of my work, but not a single website will tell me what he used! Was it mixed media, paint, oil pastels, collage? Anything will do thanks

Answer 1

If it's from the Elements series of 1556-70 then oil on panel otherwise it's probably oil on canvas.
He didn't use collage or mixed media, just drawing and oil paint.