The skin of your dog is entirely different from ours. There is significant ph difference so their skin is more sensitive than ours. Their body secretes some essential oils which gets depleted once you start bathing them daily. It results in drying of skin leading to flakes formation of policy kit is.
Some tips to remember---
*bathe your pets once in 10 days.
*groom your pets daily.
*do not use dettol/phenolic compounds on their body. It can be allergic.
*don't allow ticks/fleas/mites to thrive on their body.
*for hairy breeds, go for a complete hair-cut in summers.
*for breeds with drooping ears, take special care about ear cleaning.
*never use human soaps & shampoos like dove/clinic plus on dogs body. It can cause allergic dermatitis.