If it is chemical free, I would try it-DEFINITELY! We are mammals just as dogs are, and some of the things we humans eat are worse than what dogs eat.
Also- if you have excema, I reccomend doing a parasite cleanse-- even if it means fasting on raw pineapple, raw pumpkin seeds and raw garlic for 2 weeks --as one of the members over at Humaworm's forum is doing before his Humaworm dewormer arrives in the mail. Most of us humans do have some type of parasite that can cause symptoms but we do not take this seriously enough. Roundworm is known to instigate exczema and psoriasis. Most parasites can remain hidden and unknown in a human unless you do a parasite cleanse.
Also , eating more raw fruits and vegetables will help the body cleanse itself and cut down exczema as well. Drink lots of liquids throughout the day to cleanse the body's toxin load.
Liver Flushing occasionally will jump start the liver's health- and will free it up. Don't be surprised if your exczma also goes away after 3 liver flushes!