We have only washed ours once (with the puppy oatmeal shampoo) and Schnaggles got a bit of dandruff. We rubbed a tiny bit of olive oil through his coat, which helped. Someone suggested we add a bit of olive oil to their food, or canned sardines in oil every now and then.

We also have a new animal shampoo by Aesop, who make yummy essential oil products. Can't wait for the next warm day to try it on them and me!