Elizabeth, if your baby is only 4 mos. old, I would continue to use something like johnson's and johnsons baby shampoo until you can take her to the groomer.
If you want to invest in some shampoo and conditioner, you can google Vellus Products and I think you have to purchase it there and yet it may be some stores
for all I know. Coat Handler is avaliable in alot of pet catalogs but sometimes there
a minimum purchase so you could go to
http://groomstar.com/shampoo_conditi...t-handler.html Let us know how
it works out if you decide to get it.