Sorry that link wasn't active, here it is:
would a camomile and lavendar one be ok?
My name is XXXXX XXXXX X have been a Vet Tech for 30+ years. It seems you opted Lynn out where she cannot respond to you. Cammomile and Lavendar are fine in a dog Shampoo. This link gives you a list of the safe Essential oils that are in dog Shampoos: http://www.natural-dog-health-remedies.com/essential-oils-for-dogs.html The link Lynn gave you are the oils to avoid and can be toxic. I hope this helps. Please let me know if I can assist you further. Joan