Picture of Reduce your liquid soap usage - FOR FREE
Liquid soap has many advantages over "normal" soap - it smells better, is a bit cheaper (depends on where and what sort of liquid soap you buy), easier to use and, to a certain degree, more hygienic than sharing the same piece of soap with several other people (if you live in a dorm, for example).

It does have a disadvantage, though: If you mindlessly push the dispenser head too far down, you get way more soap than you actually need. A third or a quarter of that amount is normally sufficient to clean you hands - that is, if you don't have bucket-wheel excavator-sized hands.

I've modified my soap dispenser a little bit in order to limit the dispensed amount to this sufficient minimum. I didn't actually spend anything for this modification and it took me less than five minutes to finish.

Sidenote: I'm not a native english speaker, so please bear with my writing style :)

Step 1: Bill of materials

Picture of Bill of materials
You need the following items and tools to create the soap dispenser modification:

- the soap dispenser, of course
- a plastic screw-on bottlecap (I recommend the ones from tetrapack packages, their plastic is a bit softer)
- something to drill a hole in the bottlecap (I used the corkscrew of a swiss army knife)
- scissors or small knives for enlarging and carving out the hole in the bottlecap
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crossless5 years ago
 I bought from shop that like 3litres of bottle soap cost the same that refill bottle that has only soap for two bottles. If you have really dirty hands soap that been mixed with water won't clean your hands.
I imagine it depends on what your hands are really dirty with. If you create suds and wash them good it should be fine for dirt, etc. If I'm not mistaken Pure castile soap does not have a "grease-cutter or degreaser" ingredient that dish soaps have and therefore any grease/oil/lipid grime may be tougher for one to remove?
Please correct me if I'm wrong. I'm a huge fan of Dr. Bronner's and also really enjoyed the documentary. IMHO It's great that the family has carried on the business & grown it with the same values as their father/originator of Dr. Bronner's. It's nice to know your not buying a product from Kraft or Nestle! (if you don't know what I mean check out betterworldshopper.org

Keep em Clean!
My apologies. This instructables doesn't even mention Dr. Bronner's...doh!!
I just did a search for best way to dilute Dr. B's for a hand soap pump and this is what popped up....never assume. I guess that's why I haven't posted before LOL.
I probably sound like a Dr. B's Rep. or something. Sorry.
Zorra315 years ago
This is exactly what I need for the soap in my children's bathroom.  They go notoriously overboard because they have typical 4-year-old judgment and motor skills - they basically just smash down all the way on the pump and assume they need everything that comes out, lol.  Even when I tell them to just use a tiny bit, it's hard for them to control.  If I add a bottle cap around the dispenser as shown (plus dilute the liquid soap with some water per bram's tip), it will probably be perfect!  Thanks!  :)
And you know that pump/packaging was by design. A great way to sell more soap from a pure capitalist point of view, I guess. I hope that was nice and positive, maybe not ideal, but at least made the cut for the policy I just read below (long time lurker/learner - love this site!, first time post'er). Great idea, especially for those with children (or those of us that act like children sometimes:-) . I also agree with porcupinemamma, your writing was great. I wish I was multilingual and had an excuse for mine! Thank you.
First may I say that you did not have to explain that english is not your first language. You write beautifully! Great Instructable. Thanks so much for sharing!
francoe5 years ago
A mi me resulta como miserable la idea.
rockytop445 years ago
I save all of my bars of soap pieces and put them in a pumper or dish soap bottle and this is almost an endless soap supply, mix with water and you have it.
AstralQueen5 years ago
I am pretty slap dash when it comes to these things so I took a shortcut and used a rubber band instead. I ust tied it at the base of the pump head and diluted the soap (3 parts soap, 1 part water.) This should reduce the use of soap. :D
That's a great idea. I know how to make liquid soap even cheaper. Take an empty liquid foam style soap container. It must be the "foam" style. Fill the container about 20% with your favorite liquid soap(not foam style). Fill the rest of the way with water and shake well. The foam liquid soap always costs more than the regular liquid soap but if you notice the foam soap is very watery. That's because it's 80% water to get through the foaming process of the different pump. This makes the normal bottle of foaming liquid soap cost pennies.
You can also use shampoo, body wash, dish soap . . .any detergent, really. It's a great way to use up products that were a bit disappointing at their intended purpose. We've been using a few disposable foaming soap containers for a couple of years now.
MegaMaker5 years ago
Nice mod!
I have used an alternative method for years using a few rubber washers in the same way you used the second cap. Hopes this helps .
sirmorrow6 years ago
Be careful the company doesn't come after you. They designed it to run out faster. You're costing then money. BTW your English is better than 80% of my high school students... in America!
I agree! The only thing that I didn't get was "Bill of materials". I would use "List of Materials".
Bill of materials is commonly used in a lot of projects. Its usually the materials along with unit number and sometimes price. some places instead of browsing there website or store, you can just bring in a bill of materials.
I just learned something new then!
The term's especially common in engineering/manufacturing areas, I don't know that I've ever heard it used outside the context of people who make stuff as a profession
..and better than 90% of my University students, in Canada.
denkbert (author)  sirmorrow6 years ago
Why, thank you :)
Your english is good and your idea is simple and brilliant. Very practical.
nehmah5 years ago
Thanks for the informative article. Your English use is fine. I keep thinning out the cheap stuff, but never thought of adding alcohol to the hand soap for an anti-bacterial. With two grandchildren under 6, I may wait a bit. The concept of rinsing soap off seems to elude them. Cordially, Nehmah
rimar20006 years ago
Very clever. This reminds me of the salt shaker for hypertensive, which contains salt but has no holes ...
May I have a link to that?
No, it is a secret web page.
Another one...

I feel so left out...
That is not a web page, it is itself a joke. Read carefully my first sentence and you understand.
Yes yes, I know.
nathski6 years ago
We have soap dispensers at my office which regularly run out. I often add a dribble of water every now and then to make them last longer.
kylara706 years ago
Wonderful!!! I've explained the concept to my little ones but they are not careful (as children will be), so this would be WONDERFUL! I will set my son to making this adaptation. It will be a GREAT learning experience for him and a money saver for me. Can't beat that!!! Also, I too want to congratulate you on your English. You did very well.
goodgnus6 years ago
Clever idea to reduce soap per pump. Though I suspect some people will just go for more pumps. Liquid soap is really just gel soap diluted. I venture to say soap company profits went through the roof when they figured out this little trick. I prefer to make my own "diluted soap". I refill my foaming handsoap dispensers with Dr. Bronner's liquid Organic soap. I usually add about 1/4" of Dr. Bronner's to the bottom of the dispenser and fill the rest with water. Test, and add more soap to your liking. Works great and is tens of times cheaper than buying liquid soap refills.
Dr. Bronner's FTW! Stuff is amazing. I've got to try this with a foaming dispenser... Sounds brilliant!
Indeed, glad you share the enthusiasm for Dr. Bronner's. I use it as shampoo, facewash and bodywash too. I like the tingle of the Hemp Peppermint. I find it's cheapest in 32oz bottles at Trader Joe's stores.
Kirbsome!6 years ago
This is pretty good! But wouldn't it be easier just to put a dab of hot-glue where the cap goes?
denkbert (author)  Kirbsome!6 years ago
It surely would be easier. But you would risk melting the thin plastic walls of the bottle.
Probably, but it doesn't look as good.
l3owzaaaah6 years ago
5 stars to this buddy, i did this with one of those quick handwash things you buy for swine flue protection or whatever. It works wonders and my friends think it's broken so they don't bug me to use it 24/7 Thanks matey, all the best. GB. ☆☆☆☆☆
kerns6 years ago
+1 to this idea... another option would be to acquire and subsequently refill a foaming liquid soap dispenser.
We have two hand soap dispensers (made by method soap in the US) and I've refilled both many times now... their pump heads *foam* liquid soap, thus dispensing less per pump.
To go still farther, I refill these with liquid hand soaps (and once Palmolive SpecialLadyHandLovin'DishSoap(TM) but *only put in 1/4 /container soap, and then add filtered water*.
The foam still cleans our hands thoroughly but is using much, much less soap per pump.

Nice idea on the modded hand pump nevertheless!
Scott_Tx6 years ago
I re-use those foaming hand soap dispensers with a watered down cheap dish detergent. I prefer the foaming because the soap doesnt run off your hands like it does with the liquid soaps.
I refill mine with large bulk bottles of shampoo from the $2 shop or similar
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