Mar 1, - CONCRETE pours thick and cool, like a mud milkshake. scabs, scaling, fissures, redness, a rash, swelling, bumps, and watery discharge. Allergic contact dermatitis (ACD) is a form of contact dermatitis that is the manifestation of an The first sign of allergic contact dermatitis is the presence of the rash or skin lesion at the site of exposure. Depending on the tanning of leather. Also a component of uncured cement/mortar, facial cosmetics and some bar soaps.