Rinse aid is required to:
Ensure spot-free, shiny dishes
Assist the drying function
Salt is required to:
protect your machine from limescale
soften the water for better cleaning
With multi-benefit tablets such as Finish Quantum Ultimate and Finish All in One, rinse aid and salt functions are included. However, in very hard water areas we also recommend the use of separate Salt and Rinse aid products to protect your machine and achieve the best result.