Vagisil is good for bitches with itches!

Seriously though-it will work fine. Just don't uses too much and if you want a more natural approach use coconut oil. Also a teaspoon of coconut oil daily is a good thing, it is has natural antibiotic properties.
Check the dogs diet as well, remove all chicken from the dogs diet. All Chicken! Treats, snacks etc! Something about the chicken can exasperate the issue plus quite a few dogs develop an allergy to chicken which can manifest in odd ways.
Does the dog exhibit any other skin issues such as hot spots?