Kids with eczema need a thin layer of a moisturizer applied every day, or even better, twice a day. There are many that work well, but for the face, I like Aquaphor. It is strong, yet gentle enough to use on the skin of premature infants . When there is a flare-up, kids often need something stronger to break the itch-scratch-itch cycle. Steroid creams are often used for that. These should not be used long-term and most doctors do not recommend using them on the face. The strongest steroid I feel comfortable with on the face is about 3 percent hydrocortisone -- about three times stronger than the hydrocortisone you could get over the counter.
In those children with allergy causing the eczema, they will usually get rashes or more extensive eczema soon after eating a particular food or drinking milk (in the case of babies). If you notice this, remove that food from your child's diet ( if you have a baby, this will need to be done under supervision with an appropriate other formula ). If there is a marked improvement on removal of the suspected food, then the food may have been the cause - cautious reintroduction of the food after 3-4 weeks will enable you to be sure. If on reintroduction of the food, the skin remains clear, the food can continue in the diet. If the skin flares up again, that food needs to be removed from the diet. In those toddlers who do have an allergy to a food causing eczema, a trial of reintroduction can be made in 6 - 12 months time as many children will grow out of these allergies.