Mixed Media Art
[mɪkst ˈmiːdɪə ahrt]

The artist or “Creator” doesn’t only paint color on canvas but eventually glues some other material on the canvas or does freaked things, like sticking hairs, dirt or rotten food on it. Or the dealer or gallery has no clue which exact material the artist did use and just tells you it is “mixed media”. 

Image via miamiherald.com