If you have eczema this indicates your skin is able to produce less fats and oils and its ability to retain water has reduced. This leads to increase in the space between cells and water loss from the dermis which creates space for irritants and bacteria can enter easier. That’s why it is recommended not to use soaps and detergents as they can only worsen eczema by stripping away lipids and lead to dryness, inflammation and even blistered.