Eczema is rough and red, and sometimes it breaks out in blisters called weeping skin found most commonly on the face and limbs especially on the inside of elbows and back of knees. The inflammation is inside the skin and is intensely itchy. Patients cannot stop from scratching and the damage to the skin comes from the scratching and especially from the child's own nails and can cause permanent scarring in extreme cases. Even when transitory, it is ugly and very uncomfortable.
Source : http://www.philly.com/philly/health/kids-families/bath-additives-not-needed-to-treat-eczema-20180508.html