My 2 month old son breaks out real bad on his face all the time his dr. Said its seboric dermatitis is this permanent and what's the best home remedy?

Atopic dermatitis. This is more likely to be atopic dermatitis. He needs a good, thick emollient at least two times a day to the area--try truelipids ointment or cream. It is the safest, most non-toxic option out there. Go see a dermatologist who has a lot of experience with this disease. I have many many helpful things that i teach my patients, but cannot type them all here in 400 words or less.