Well, to cut in I have a cotty boy (Jack) he has Very dry hair and I have tried some shampoo's but with no avail he is still dry. Well I bought some mega cholesterol conditioner. I shampoo as usual which I use Pet silk oat meal shampoo. Rinse well and put a generous amount on him and rub it in and take him out and blow dry him until its all gone about a couple of seconds. Rinse well and he is shinny and conditioned.
I did this to Bella today and she is silky.
Hope this helps. You might need to to a treatment.
Cheryl/Jack/Bella