Disposable product of abstract artist and most of following (7)

'disposable product' is the definition.
The answer and definition can be both substances as well as being singular nouns.
Maybe you can see an association between them that I don't see?

'abstract artist and most of following' is the wordplay.
'abstract artist' becomes 'klee' (Paul Klee. I am not sure about the 'abstract' bit.).
'and' means one lot of letters go next to another.
'most of' means to remove the last letter.
'following' becomes 'next' (synonyms).
'next' with its last letter taken away is 'nex'.
'klee'+'nex'='KLEENEX'

'of' acts as a link.

Can you help me to learn more?