I use Pantene deep fortifying treatment once a month on Kitty and she does fine with it. I leave it sit on her for the 3 mins and wash it out after her normal shampoo and conditioner. I find it helps keep her looking her best longer. This is stuff you're not suppose to use on yourself but once a week. I only use it on Kitty once a month. I've not had any problems with it except the time my daughter helped me wash it off and she didn't get all of it washed out.