Cotton and a greasy stain

I have a lovely pistacho green blouse and I have, somehow
got a gurt grease stain on the botton.
Washed it before I realised and have washed it twice since, with a so called grease remover, which hasn't worked.
Any ideas?

Washed it before I realised and have washed it twice since, with a so called grease remover, which hasn't worked.
Any ideas?