Join Date: May 2011
Location: Northern California
This kind of "jealous" behavior is actually pretty common, but it's not something you want and I would discourage it. I see it as a resource guarding issue, the dog is protecting her resource for petting and affection, in this case, the groomer.
As for the de-shed treatment, there are shampoos and conditioners designed to help dead hair release so that it can be more easily removed. Sometimes this is followed up with use of a Furminator or other carding (de-shedding) tool. I have some of these de-shedding products in my salon, but I am not entirely convinced that these "special" products work any better than regular shampoo and conditioner--the real key to de-shedding is a good bath, water pressure, HV dryer, and a carding tool like the Furminator.
Some of the de-shedding products contain a silicone-based ingredient that helps with brushing; each hair becomes more slippery, thus it is easier for the dead hair to slide out of the coat, and it helps remove any tangles, mats or clumped-up undercoat on the dog. It also makes the hair shiny, and helps repel dirt once the coat is dry. I have heard that there may be another secret ingredient in the de-shedding products that helps the dead coat release, but I am not sure if that is manufacturer hype or groomer speculation. Because pet shampoos are not required to list their ingredients on the label, we really don't know.