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Best Soap Dispensers Reviewed & Rated for Quality

last updated Feb 22, 2019

There are a ton of reasons to buy yourself a soap dispenser. It just makes your life much easier. It makes it so much easier to quickly get the perfect amount of soap for yourself. There are many kinds of soap dispensers that you can buy these days. There are dispensers that are built into your sink, which is useful for storage and style. There are other dispensers that use sensors so you don;t have to touch anything with your dirty hands. This list has ten of the best soap dispensers that you can fin don the market. They come in a variety of styles, and range from the simple to the fancy. All of them have their own uses that will prove to be a huge benefit to your home, so come and look around for the one that you like.

In a Hurry? The test winner after 13 hrs of research

icon
simplehuman Compact Sensor Pump
98.6/100 our score
Capacity
99
Durability
98
Ease of Use
99
Fit
98
Value
99
simplehuman Compact Sensor Pump
Why is it better?

Accurate sensor

Comes with free soap

Good price

Easy to refill

In a Hurry? Editors choice:
simplehuman Compact Sensor Pump
Test Winner: simplehuman Compact Sensor Pump
Researched Sources
12
Researched Sources
Reviews Considered
6789
Reviews Considered
Hours Researching
13
Hours Researching
Products Evaluated
10
Products Evaluated
Sorting Options
Capacity Durability Ease of Use Fit Value By Default
Rank
PictureProduct
Name
Rating
Shops
#1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
98.6
Capacity
99%
Durability
98%
Ease of Use
99%
Fit
98%
Value
99%
Price Comparison Last Updated (24.04.19)
$46.49
#2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96.8
Capacity
97%
Durability
97%
Ease of Use
96%
Fit
97%
Value
97%
Price Comparison Last Updated (24.04.19)
$19.99
#3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
94.8
Capacity
96%
Durability
95%
Ease of Use
95%
Fit
94%
Value
94%
Price Comparison Last Updated (24.04.19)
$21.23
#4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92.8
Capacity
93%
Durability
93%
Ease of Use
92%
Fit
94%
Value
92%
Price Comparison Last Updated (24.04.19)
$14.95
#5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.8
Capacity
91%
Durability
91%
Ease of Use
91%
Fit
90%
Value
91%
Price Comparison Last Updated (24.04.19)
$16.99
#6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.8
Capacity
88%
Durability
89%
Ease of Use
90%
Fit
89%
Value
88%
Price Comparison Last Updated (24.04.19)
$27.99
#7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
Capacity
87%
Durability
88%
Ease of Use
87%
Fit
86%
Value
86%
Price Comparison Last Updated (24.04.19)
$17.99
#8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
85.4
Capacity
85%
Durability
86%
Ease of Use
86%
Fit
86%
Value
84%
Price Comparison Last Updated (24.04.19)
$10.50
#9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
83.2
Capacity
84%
Durability
83%
Ease of Use
84%
Fit
83%
Value
82%
Price Comparison Last Updated (24.04.19)
$13.95
#10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
80.8
Capacity
80%
Durability
81%
Ease of Use
81%
Fit
81%
Value
81%
Price Comparison Last Updated (24.04.19)
$33.88
In Depth Review Top 10
  • simplehuman Compact Sensor Pump
  • mDesign Glass Refillable
  • Secura 17oz/500ml Touchless
  • Premium Home Quality Mason Jar
  • Kitchen Classics Sink
  • YiShuo Automatic Waterproof Base
  • HotelSpa Luxury Shower System
  • InterDesign Gia Stainless Steel
  • Jarmazing Glass Pint Jar
  • CandyHome Countertop
Table of contents
  • Criteria Used for Evaluation
  • Other Factors to Consider
  • Frequently Asked Questions
  • Sources

10 Best Soap Dispensers

1. simplehuman Compact Sensor Pump

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
98.6
simplehuman Compact Sensor Pump
Capacity
99
Durability
98
Ease of Use
99
Fit
98
Value
99
best offer for today
$46.49
Pros:

Accurate sensor

Comes with free soap

Good price

Easy to refill

Cons:

Batteries might die eventually

The simplehuman is a soap dispenser that does all of its work without you needing to touch it. this dispenser is great for keeping your home clean, and also your hands.

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Hands Free Soap Dispensing
The simplehuman soap dispenser has thought of everything that would make it easier for you to get your hands clean. The sensor is very well-designed and will detect your hands very quickly, unlike many hands-free dispensers in public washrooms. It also gets the soap out as quickly as you could hope for.

Other Features
The simplehuman has many other clever design features that make it a great choice for anyone looking to keep themselves clean. It runs on batteries, or it can be recharged, depending on the model that you buy. It comes with a wide opening so that your soap refills won't end with you having to clean soap off the counter.

Cost and Value
The simplehuman pump doesn't cost very much at all. If you have been using hand pumps for a while and have been thinking about a change, then maybe it is time to switch it up. The simplehuman comes with some free soap so you don't have to worry about buying yourself some. This makes it a no brainer to go out and give this one a try.

2. mDesign Glass Refillable

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
96.8
mDesign Glass Refillable
Capacity
97
Durability
97
Ease of Use
96
Fit
97
Value
97
best offer for today
$19.99
Pros:

Durable materials

Good price for a set of two

Classic style

Easy to use

Cons:

May be too simple for some

For something a little more classic in its design, try out the entry from mDesign. This dispenser is a well-made and classic pump soap dispenser.

Read more

Hand Pump Soap Dispenser
The mDesign is a great choice if you don't mind the extra work that goes into using a hand pump soap dispenser. These dispensers are a bit more work, but they keep it simple, and there's nothing wrong with a little bit of simplicity. This dispenser can be used to hold any kind of liquid you can think of, including dish soap, moisturizer, or oils for your skin.

Other Features
This is a very well-designed hand pump that you won't regret purchasing for your home. It is made of durable and classic materials. The head is made out of stainless steel so you won't have to worry about any rusting occurring. The bottle is made of a textured glass that will make it a breeze to fit anywhere in your home with its easygoing style.

Cost and Value
A hand pump will cost you much less than any kind of soap dispenser that comes with a sensor. This hand pump is very cheap. There is also the option to buy it in a set of two if you can think of a few different surfaces that could benefit from some extra cleaning. This dispenser is a total classic when it comes to hand pumps for soap.

3. Secura 17oz/500ml Touchless

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
94.8
Secura 17oz/500ml Touchless
Capacity
96
Durability
95
Ease of Use
95
Fit
94
Value
94
best offer for today
$21.23
Pros:

Cheap for a sensor dispenser

Can choose the amount of soap

Off and on switch

Waterproof design

Cons:

Can be a bit large for some bathrooms

The Secura is another soap dispenser that uses a sensor, but this one is quite a bit larger so you won't have to refill it as often.

Read more

Sensor Soap Dispenser
The Secura is an automatic soap dispenser. This makes it easy for you to use it without getting your dirty hands on any of your other clean surfaces. The sensor uses infrared and is able to detect your hand from a good distance away so you don't have to awkwardly press your hands right up to the soap dispenser.

Other Features
The Secura has many other features that make it stand out from other dispensers. This dispenser has an extra large tank and can hold up to five hundred milliliters of soap. This means that you won't have to refill it too often. The Secura is also great because it has a dial that lets you choose the amount of soap that you want to use. You might need a different amount depending on where you are putting it.

Cost and Value
The Secura is a very cheap choice for anyone looking to make a move to a sensor using soap dispenser. This is a good choice for those who are worried about things like battery life because the Secura has an off and on switch which will help you save a bit on batteries. It has a sleek style that will make it a natural fit in most kinds of bathrooms.

4. Premium Home Quality Mason Jar

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
92.8
Premium Home Quality Mason Jar
Capacity
93
Durability
93
Ease of Use
92
Fit
94
Value
92
best offer for today
$14.95
Pros:

Homey design

Stainless steel dispenser

Comes with a label

Holds a lot of soap

Cons:

Glass might be dangerous if it breaks

This is another hand pump for soap, but it covers a totally different swath of styles. If you like your home decorations to look a little more vintage and cozy, think about buying this one.

Read more

Hand Pump Dispenser
This is another hand dispenser, similar to the mDesign. The big difference between the two is the type of style that you get when you buy this one. The body of this dispenser looks like a mason jar, which will give your bathroom a more homey feeling. The mason jar is also a natural fit for the twist on dispenser, which is a convenient bonus.

Other Features
The Premium Home Quality pump does a great job of keeping your hands clean, while also looking good. The pump is made out of stainless steel so you never have to worry about if it is going to rust at any time. The jar holds a good deal of liquid as well, which means that you won't have to spend that much time worrying about having to refill it.

Cost and Value
This is a very cheap product that will instantly make any kind of living space feel just a little more like a home. Buy yourself one of these dispensers if you want a high-quality soap dispenser that also has a classic look. This dispenser also comes with a chalk label, which makes it a perfect choice for if you want to buy a set of dispensers that hold different liquids.

5. Kitchen Classics Sink

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.8
Kitchen Classics Sink
Capacity
91
Durability
91
Ease of Use
91
Fit
90
Value
91
best offer for today
$16.99
Pros:

Don't have to worry about sliding bottles

Five year warranty

Easy to refill

Great price

Cons:

Installation might take some time

This dispenser is something a little different. This dispenser is made to be installed right into the sink, which will help keep your home clean, as well as not disrupt the style of your kitchen.

Read more

Sink Dispenser
This type of dispenser is incredibly useful and convenient, but only after a potentially difficult installation process. A sink dispenser fits right into your sink. This removes the annoyance that comes from an open bottle that slips and slides all over your sink. The Kitchen Classics will be able to keep in tune with any kind of metal sink with ease.

Other Features
The Kitchen Classics dispenser has many clever features that will make using your soap dispenser a very easy and painless experience. The nozzle is an extra long three inches, which allows it to reach over the rim of the sink. You can just put soap right into the sink for when you need to clean dishes or other things. It is also very easy to refill it because this dispenser can have the top screwed off so you can easily refill it.

Cost and Value
The Kitchen Classics is a great deal, and costs around the same amount as many of the other hand dispensers on this list. The installation process might be more difficult than other dispensers on this list, but this dispenser does come with a video that will guide you through the process of installation. It also comes with a free bottle of soap to get you started.

6. YiShuo Automatic Waterproof Base

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.8
YiShuo Automatic Waterproof Base
Capacity
88
Durability
89
Ease of Use
90
Fit
89
Value
88
best offer for today
$27.99
Pros:

Clean construction

Comes with a warranty

Accurate sensor

Great price

Cons:

Battery area is not waterproof

This is a very popular brand of automatic soap dispenser, and that is completely due to the high quality of this product.

Read more

Automatic Soap Dispenser
This is an automatic soap dispenser, which will make it very easy for you to keep your hands clean, while also keeping the rest of your bathroom or kitchen clean. The sensor is completely touchless and is also very accurate at detecting a steady hand, which will decrease the frustration of wildly swinging your hand in front of the sensor.

Other Features
The YiShuo has many other great features which make it a good choice for your next soap dispenser. This dispenser makes it easy for you to keep your home clean because the stainless steel that it is made off is also resistant to fingerprints, which will help keep your life easy. It also has a waterproof base, which makes it easier to put it closer to the splash zone in your bathroom or kitchen.

Cost and Value
The YiShuo is much less expensive than many other automatic soap dispensers. This dispenser will make your life much easier in many different ways, from its grime resistant design to its very accurate sensor. It also comes with a three-month warranty so you can have time to be convinced of how good of a soap dispenser this is.

7. HotelSpa Luxury Shower System

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86.8
HotelSpa Luxury Shower System
Capacity
87
Durability
88
Ease of Use
87
Fit
86
Value
86
best offer for today
$17.99
Pros:

Saves you lots of time

Easy to install

Won't slip off wall

Don't have to lean over for shampoo

Cons:

Designed for the shower, specifically

The HotelSpa entry on this list is designed to be used in a shower or bathtub. It'll make getting yourself clean as easy as is possible.

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Shower Soap Dispenser
This dispenser is designed to be put on the wall of the shower and then filled with your favorite cleaning product. This is useful for many reasons. The shower is the most slippery part of the house, many would argue. This makes it so your bottles of shampoo are easily accessed, as well as sturdily mounted within easy reach.

Other Features
The HotelSpa dispenser has been designed so that it is very useful in many different ways. These dispensers are designed so that they are very easy to mount on the wall. It can actually be done without the use of any tools. These use adhesive strips, but they are completely waterproof as long as they are put on a wall that has been cleaned thoroughly, and then dried.

Cost and Value
The HotelSpa dispensers come in many sizes and styles, which is useful to find the one that is most fitting of your bathroom. These dispensers can be bought at a very reasonable price and will save you lots of time with your daily showers. It might be a good idea to buy more than one at a time so that you have a place to put all your different products.

8. InterDesign Gia Stainless Steel

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
85.4
InterDesign Gia Stainless Steel
Capacity
85
Durability
86
Ease of Use
86
Fit
86
Value
84
best offer for today
$10.50
Pros:

Cheap price

Small profile will fit anywhere

Stainless steel won't corrode

Easy to refill

Cons:

Might be too small

This is about as simple as it gets. This dispenser is a hand pump dispenser that is designed out of stainless steel from top to bottom.

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Hand Pump Design
The InterDesign is a cheap and compact hand pump that will make it easy for you to get yourself clean. This is the option if you aren't worried about flashy features or stylish construction. This one will do a great job of holding your soap and then giving it to you when you want it. It will fit in anywhere in your home with its simple design.

Other Features
This hand pump has some clever ideas that make it a good fit for anyone's home. The steel materials will make sure that you don't have to worry about it ever breaking if it falls off the counter. It is also designed with an extra wide top, which will make it easy for you to refill it with soap. This one is also designed with a compact frame, which means that it will easily fit on any ledge around your sink, no matter the size.

Cost and Value
The InterDesign is a pretty cheap choice if you want a soap pump that you don't have to worry about. It will do a great job of fitting anywhere you need to put it. This includes its simple style, which will fit in any kind of bathroom or kitchen. This is a good choice if you just need something quick, and don't want to think about it too much.

9. Jarmazing Glass Pint Jar

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
83.2
Jarmazing Glass Pint Jar
Capacity
84
Durability
83
Ease of Use
84
Fit
83
Value
82
best offer for today
$13.95
Pros:

Simple and clean design

Good price

Large capacity

Good materials

Cons:

Might be too large for some parts of house

The Jarmazing is a simple and sophisticated hand pump, which looks good in any part of the house. It is easy to use and refill, as well.

Read more

Hand Pump Dispenser
The Jarmazing uses a simple hand pump, which is easy to use for anyone who needs to clean their hands. The nozzle is a good size that will make sure that you can fit underneath it. It has a capacity of one pint, which is pretty big. You won't have to come around and refill this one very often. The Jarmazing is great for any part of the house.

Other Features
The Jarmazing is made of glass, metal, and plastic. The glass of the bottle is very durable, and also gives off a very clean look. It has a simple presentation and allows for anyone who sees the bottle to know what is inside of it. The metal components are all stainless steel so you don't have to worry about rust or gunk gumming up the nozzle.

Cost and Value
The Jarmazing is a pretty good price for a soap dispenser that looks this good. It is simple, but it does an effective job and will leave you with no complaints. It is a pretty large size so you won't have to refill it very often. This is a good choice for any part of the house. It could be used for dish soap in the kitchen, or moisturizer and shampoo in the bathroom.

10. CandyHome Countertop

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
80.8
CandyHome Countertop
Capacity
80
Durability
81
Ease of Use
81
Fit
81
Value
81
best offer for today
$33.88
Pros:

Saves you money

Volume control settings

Foam is easier to rub in

Easy to fill

Cons:

Can be noisy

The CandyHome is a different kind of soap dispenser from others on this list. This dispenser is designed to turn soap into foamy soap for your hand.

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Foam Soap Dispenser
The foam soap from this dispenser behaves a little differently than other dispensers on this list. The dispenser does a good job of making it quicker and easier for you to rub the soap into your hands. It is also a great choice because it allows you to mix water in with the soap so that you save money on your soap purchases.

Other Features
The CandyHome will save you lots of money with the way that it creates its foam. You mix it with three parts of water for one part of soap, which greatly reduces the amount that you need. The CandyHome comes with a setting that allows you to choose the amount of foam that you want to be given out on each pump.

Cost and Value
The CandyHome costs a bit more than many of the other dispensers on this list, but it does a really great job of saving you money in the long run. The foam soap is just as effective as traditional soap, and it will save you time and money, as well. The CandyHome is a great choice for anyone looking for a convenient soap dispenser.

Criteria Used for Evaluation

Capacity

The amount of soap that you can fit in your soap dispenser is important for a few reasons. It will dictate how often you have to refill it. This can be annoying because you always find out that the dispenser needs to be refilled right when you need it most. The capacity is important for how often you refill it, but it also will dictate how much space that the soap dispenser will take up. this means that you have to make a choice between space and capacity, in many cases. Think about how much space there is on the counter, or in the sink, and then decide how large of a dispenser you can handle. The soap dispenser's capacity is also important for how much soap you will have to keep on the side. The larger the dispenser, the more likely you won't need to have a soap refill somewhere else in the house. The rating in this category is an indication of how much liquid you will be able to fit inside the dispenser, relative to how much space it will take up. Make sure to look for something with a perfect balance.

Durability

This is another important thing to look out for in a soap dispenser. What makes it so important is that no one wants to have to spend too long of time shopping for a soap dispenser. It is the kind of purchase that should only have to be made so many times in your life. The soap dispensers on this list will all do a great job of lasting through the years as a reliable place to keep your hands clean. The secret here is that the materials that make up the soap dispensers need to be able to handle moist environments. You want to avoid things that will rust, or get blemishes on their surfaces. The metal components in these dispensers will all do a great job of staying like new for as long as possible. It's also important that the hoses don't get gummed up with dried soap or other gunk. Finally, it's important that the soap dispensers won't get damaged when they fall off the sink or shelf. This is something that is bound to happen eventually. Sinks are very slippery surfaces, and they need to be able to withstand falling from a bit of height.

Ease of Use

One of the most important things that should come with owning a soap dispenser is that they are easy to use. The less you notice their presence in your life, the better the soap dispenser probably is. This means that the functionality should be as simple to grasp as possible. The pumping mechanism of a soap dispenser can vary in many different ways, but it is important that you can quickly get the right amount of soap on your hands. A hand pump should always be easy to push down, and the nozzle should be easy to reach. It should also dole out just the right amount of soap so that you don't have to pump it multiple times or have to deal with so much excess soap that it is hard to get it off of your hands. The automatic soap dispensers should be able to work without you having to wildly swing your hand around in front of the sensor, as well. It's important that the sensors also only detect your hand and not anything else that is passing through your bathroom at a further distance.

Fit

The ability to put your soap dispenser anywhere is another very important facet of owning one. They need to be able to comfortably fit wherever it is that you are planning to put them, be it on a wall, on a counter, or right beside the sink. The lips of a sink are usually quite narrow, and small. Real estate in the bathroom is always at a premium, so it is important that your soap dispenser is not taking up more than it's a fair share. It is also important that the installation of your soap dispenser will have it firmly placed where it is supposed to be. Being in the business of soap is an inherently slippery business. This means that the bottoms of the soap dispensers need to be good at keeping a firm grip on the ground. Look for bottoms that have rubber stoppers, or at least have the ability to heavy enough to keep a good grip. It is so easy for the soap dispenser to get smacked into the sink or on the floor, so it is important to try to find one that will resist that urge.

Value

The price range for all these soap dispensers is quite wide, but it is pretty easy to see why certain things cost as much as they do. The simple hand pumps are all at a very reasonable price. A soap dispenser is not much a luxury item, so they should not cost too much. Look for high-quality materials and classic looking styles. The automatic dispensers cost a little bit more, but that is because they have a lot more technology going on inside of them. The automatic dispensers usually run on batteries, so it is important to think about the fact that that will end up being part of the cost as well. Some of these dispensers come with an off and on switch that will do a good job of saving you a bit of money for when you know you won't be needing the dispenser. There are some things to look out for which will save you a little bit of money when making your purchase. Some of these prices include a second dispenser at very little extra cost. Most people need some hand soap in the kitchen, and in the bathroom, so think about buying a set of two.

Expert Interviews & Opinions

Most Important Criteria (According to our experts opinion)
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#1
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#2
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#3
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#5
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Aromatherapy Scents

There is an infinite number of scents that one can purchase for their hand soap. Some of these scents can bring an element of aromatherapy into your home. Lavender is a popular choice that is known for its tranquil and calming qualities. Citrus is another popular scent option that can bring an invigorating vibe into your home. Mint soaps can be stimulating.

Cleaning Time

The best way to clean your dispenser is also the easiest. The two thing that always eventually happen to dispensers is that they get dry soap build up on the insides of them, and the nozzles get blocked with extra build-up. The solution for both of these is the same. Put some soap and vinegar with some warm water in your sink. Take the entire soap dispenser apart and then completely submerge it in the water. After you do this, scrub off any blemishes with a plastic or metal scrubbie or brush. The nozzle on the dispenser can be cleaned out by using the pump action so that warm vinegar water comes through the nozzle. This will eventually break down the materials so that the soap can run through it easily.

Other Factors to Consider

Features

An important choice that you are going to have to make before you buy your new soap dispenser is what kind of soap dispenser it is that you want. There are many styles of dispenser on the market. The classic is, of course, the hand pump. Every home has one, and if you are in the market for one, then it probably just means that the last one broke. They are very simple. They can be used anywhere, and they will usually work for a long time. It might be worth giving a thought to the automatic soap dispensers. Mostly relegated to the bathrooms of business and other, more official, bathrooms, the automatic soap dispenser is much cheaper than you think. The infrared means that you don't have to touch anything with your dirty hands before they can become clean. This is especially useful if you get grease on your hands, and then have to wipe the tap down afterward because it got greasy before you could clean your hands. Another interesting choice is the hand pump that you install directly into your sink. This soap dispenser won't ever slip or slide and can be incredibly useful for keeping your kitchen counter free of extra things if it already quite crowded.

Style

There are many different looks among the soap dispensers on this list, but they should all if in most kinds of washrooms and kitchens. For the most part, the bathroom and the kitchen are the two most uniformly styled parts of a home. The dispensers on this list have been designed so that they can easily fit into any kind of situation. The larger ones will make a larger impression than the smaller ones, and this might be something to think about. The glass dispensers will look good in any kind of situation. The mason jar is a good choice if you are setting up a guest bathroom or something like that. It immediately gives off a comforting feeling of being in a second home. Many of the automatic dispensers have a more industrial look to them, and would probably look better in a kitchen or bathroom that has a lot of metal inside of it.

Frequently Asked Questions

q: Can you put more than just soap inside a soap dispenser?
a:

Of course, it might be best to put only soap or shampoo in the automatic dispensers. They have more moving parts and the pressure that they push out liquid might not be enough for some thicker things, but with the manual hand pumps, there are many things that you could use them for. Hand soap and dish soap are the most obvious choice, but there are many people who use the glass hand pumps for other things, like moisturizing creams, and essential oils. It is only limited to your imagination because the hand pumps are very simple and are also very easy to clean.

q: How do the sensors in the automatic dispensers work?
a:

The sensors in automatic soap dispensers are quite impressive for such a simple and ubiquitous technology. Many people wonder how it is that they work, exactly. Soap dispensers that use a sensor are made by using infrared light. Infrared light doesn't appear on the human visibility spectrum so that people can't actually see it. The light is sent out from the sensor part of the dispenser. If it hits your hand, that light is sent back towards the sensor. Once the light is sent back, the sensor is activated and the soap comes out of the machine.