Bottle of Finish rinse aid against a white background.
Dishwasher rinse aid leads to spot-free glassware.

Rinse aid explained.

Rinse aid is a surfectant, meaning it lowers the surface tension of water, so it more easily slides off dishes in the dishwasher. Especially in hard water areas, rinse aid helps prevent water spots from forming on, for example, glasses, plates and cutlery. It also helps dishes dry faster.

Rinse aid being added to the designated compartment of the dishwasher.
The rinse aid compartment is next to the detergent.

Where rinse aid goes in the dishwasher.

On the inside of the dishwasher door, next to where the detergent goes, is a rinse aid dispenser that must be manually filled. It releases the liquid at the correct time and temperature for each programme.

Pro tip: If you notice rainbow streaks (too much rinse aid) or water stains (too little) on utensils, change your dishwasher's rinse aid settings as described in the user manual.

A ramekin filled with blue rinse aid on the worktop of a bright kitchen alongside a pack of dishwasher tablets.
Rinse aid complements all-in-one tablets.

A powerful pair: rinse aid and detergent.

Even if you use an all-in-one detergent that contains a rinse aid, we recommend using a separate rinse aid, in particular if your tap water is hard. Here's why.

Dishwashers dispense detergent and rinse aid at different times during a programme. With an all-in-one product, the amount of rinse aid in the final rinse cycle might be too low, which decreases the drying efficiency. Using a separate rinse aid in addition to all-in-one tablets solves the problem.

Pro tip: No rinse aid on hand? Avoid adding extra all-in-one detergent to compensate. Doing so can damage delicate items such as glasses or leave residue on dishes.

Step-by-step: how to use rinse aid.

A bottle of rinse aid pouring the liquid into the designated compartment on the dishwasher door.

Step 1

1. Open the rinse aid dispenser by pressing on the latch and pulling the lid open.

Step 2

2. Carefully pour the rinse aid into the dispenser until it reaches the max fill line.

Step 3

3. Close the lid and verify it's properly closed.

Step 4

4. Check around the compartment and wipe away any excess rinse aid that has spilled over to avoid foam from forming.

Step 5

5. Run the dishwasher as normal.

FAQs.

Can I use homemade rinse aid in my dishwasher?

We don't recommend using homemade rinse aid in your dishwasher since it might damage the appliance and could be hazardous to your health. Additionally, using homemade rinse aid in your dishwasher might invalidate the warranty.

What happens if I don't use rinse aid?

Not using rinse aid decreases the drying performance of your dishwasher. It might also leave water spots on your dishes, especially if you have hard water.

How often should I put rinse aid in the dishwasher?

When the rinse-aid refill light appears on the control panel, the rinse aid will suffice for one to two loads. It's time to refill the compartment.

How do I set the amount of rinse aid?

Bosch dishwashers come preset to level 2. If there are streaks or water marks on your dishes, you can change the settings on your dishwasher by following the instructions set out in the user manual.

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