I would suggest that everyone with sebderm/dermatitis checks
their shampoo, facewash etc and see if they contain SLS. If
so, try using some without SLS and see if it makes a
difference, particularly if you have problems with dry itchy
skin/scalp after washing.

Shampoos/facewashes are very difficult to find without SLS,
but they do exist. I use Neutrogena Clear Pore Cream Wash
and Neutrogena T/Gel Shampoo (the one without coal tar -
check the ingredients for SLS as some T/Gel shampoos do
contain it).

Richard