Ever wonder what’s in your dog’s shampoo the groomer is using? Ask them what product they use. It could very well be contributing to your dog’s health issues.
I highly recommend Young Living Animal Scents Shampoo for it’s safe and effective use, and trustworthy ingredients. Take it to your groomer as needed. Most dog’s don’t need shampooing as often as you might think. My dogs haven’t had a “bath” in a very long time.
Think about espom salt soaks as as option as well.
Check out the database: https://www.petshampooingredientdatabase.com/