miele here. it has an 'water plus' button that adds an extra rinse.
have a look at the manual of your machine. often the 'short' cycles are short by cutting out a rinse cycle.
one of the dc and I have eczema and using the long cotton cycles plus extra rinse definitely helps. we also use less powder, about half.
a hot wash (above 40 degrees) ocassionally for underwear.