L.C.
Weleda ... the baby line - especially the oil, the shampoo/shower wash and the lotion or creme.
ALSO ... visit the Weleda site or if you are near NY the Weleda North America store and try Calendula Ointment - a homeopathic medicine. You may also find this at Health foods stores or a few Whole Foods markets.
You can also try Calendua tincture 9taking internally by you if you are breast feeding and given to the baby by dropper if not. It can be added to food and is gentle and safe for a baby (similiar to Chamomile - provided there is no allergy to ragweed).
Lastly ... INCREASE greatly your Omega 3s, DHA and basically the "good" fats in your diet - if breastfeeding and in your baby's if not.
I would also come off of ALL dairy for now - except yogurt and goat cheese or milk. Almond milk, Hemp milk and Oat milk are good.
If this does not help ... I would immediately check into a parasite cleanse (for you if you are breastfeeding) - usually involves a tincture of wormwood and a few other herbs taken in dropperfulls twice daily for a month. I have ssen this work wonders for candida, yeast infections, excema etc.
Please verify this info if you like with a homeopathic doctor, Naturopathi Doctor an M.D. trained in Integrative Medicine, Herbalists and Clinical Nutritionists.
You can also call the Hoeopathic Pharmacy at Weleda North America ... an 800 number and ask to speak with the Hed Pharmacist - Petra.
Good Luck ... hope this helps!
BE WELL!
p.s
I would not wash the baby's clothes or bedding with anything but non toxic - organic ingredients. The other irritate and add to the problem not to mention expose your baby to toxic chemicals. For starters check out wwww.seventhgeneration.com
See also the book : Toxic baby, Toxic World ... and Mothering magazine (online or in stores) ... both are real eye-openers.