There are special shampoos you can use to get rid of placenta. The best thing would be to contact your local hair stylist and ask them what they would recommend for everyone's hair is different and reacts different.
Placenta is the organ that supports fetal development in the womb. If an animal has placenta in their fur after birthing they generally clean themselves, and frequently eat the placenta.
Oatmeal based shampoo's are very gently to use on any animal and can be found at most places that sell pet merchandise. They keep the coat shiny and are not full of chemicals.
