Originally posted by Shelteez2

Dog shampoos are formulated for a dog's skin. They don't dry a dog's skin out, especially if followed with a good conditioner.
We (as humans) wash our hair way more than once a week and we're just fine. We also produce natural oils from our scalps.
The only shampoos I've used have made Timber's skin and fur really greasy lol. I think she's just weird. I wash the shampoo out really well, and the hose is high-power...

Most dogs don't produce natural oils from their skin. The only breeds that can do that are labs, goldens, chessies, flat coats, tollers, and curly coats.