Also spelt lipofuchsin. A brownish pigment thought to consist of undigested and/or oxidised lipids and proteins. These aggregates appear indigestable by the cellular lysosomal or proteasomal system. It accumulates in various tissues with age and might be useful occasionally in giving the age of a heart, and is also the pigment in earwax. It may be a component of the pigment in melanosis coli.