fake leather sofas and dried on milk

[cheesesarnie]

there is milk all over our black sofas-ive tried baby wipes,washing up liquid,leather wips.what next?

Olive oil on a duster? am amazed that the baby wipes didn't work - were they posh ones (i.e. wettish/oily).

Has it been water marked then - i.e. kind of bleached?

they were johnsons i think.i'll try olive oil-works on everything else