Induppu or rock salt is considered best among all salts. It is advised for daily use as per Ayurveda. Its qualities, usage, and health benefits are quite different from regular salt.Internal Benefits of Induppu ( Rock Salt ):- It can be added to all regular food items for better health. External Benefits of Induppu ( Rock Salt ):- Rock Salt can be used as a teeth whitener or mouth freshener. Gargling with rock salt provides relief against a sore throat.