We are another on the human shampoo, and not that often. Just like human hair, it is really not that good for them to be washed often. Their hair is amazingly good at looking after itself if it is given the chance and I certainly would not use conditioner on any animal especially one that licks its fur because conditioner is designed to be left on hair after it is rinsed out and the last thing you really want is your pet then licking and licking at its fur. I have no idea if they can lick the remaining conditioner off, but the very idea fills me with horror at the thought of the chemicals they could end up consuming as a result, so I would rather leave the fur to sort itself out and condition itself. Shampoo is designed to be rinsed off completely (to the best of my knowledge and obviously excluding the 2-in-1's)