Ovelle Silcocks Base Cream (500g). Ovelle Silcocks Base may be used as a substitute to soap for eczema sufferers. Ovelle Silcocks Base cream is a traditional skin cream that can be used as a soap substitute cleanser for the face and body, its formulation contains a blend of ingredients to hydrate and softens all skin types, especially dry skin.. Formulated without fragrances or colours, Silcocks Base will cleanse as a soap substitute.