Soap bar in shower head

[ViensPiens]

Hello,
I dont have wide knowledge about soaps, but I’m sure you can help my with some information.
I’m doing university project about soap/shampoo bar tin containers. Doing research i found example about liquid shampoo containers that is integrated in shower systems. >>>
https://www.farmshow.com/images/resize.php?w=300&img=/images/articles/33/2/8710_l.jpg
http://watersoftenermaestro.com/wp-content/uploads/2017/02/Aquasana-AQ-4100.png
https://www.bigberkeywaterfilters.c...ef19835806ba3/s/h/shower_filter_installed.jpg
Visually looking more to last one.
Concept would be the same, just with solid bar. When water being in contact with soap it’s slowly melting the bar. When it’s off the stream You have clean water.
Bar structure should be easy to melt/wash off, but it should last couple of times.
Target would be, that by flow you are able to have enough soap to wash your body.
Question is not about mechanics, but can you help me with an examples, maybe existing products, keywords, or recipes for a soap that be able to behave like that.
Thanks

 

[Lin19687]

I am not clicking on any links from someone who is new here.
No it will not work.

 

[Obsidian]

I don't think it would work either. Lye soap when left to sit in water swells up and turns snotty, really snotty.
This snot is hard to break up, I just don't see how it would be able to dilute down and come out a shower head.

The exception would be 100% coconut oil soap, its highly soluble. The problem with that is its liable to completely melt away if its left to sit in water at all.

Looking at your link, it seems like the container the soap would be in would be filled with water constantly. Just not a good environment for soap.

You would probably be better off using a synthetic commercial bath bar like dove for your project.

Either way you go, do testing of your soap of choice by letting it sit in a jar of water for a few days, see what it does.

 

[earlene]

Even if you come up with a recipe for a bar of soap like that, it would be so costly for the consumer, to me it would not make a lot of sense. I mean, they'd have to buy the mechanism that is attached to the shower head that would hold the bar of soap (I would never be interested in that) and then they'd have to change the bar of soap every day or two depending on how many people use the shower. Truly that's too much work and too wasteful. Plus the size of the bar of soap would be an issue. Not all bars of soap are the same size, so that's another consideration. And how would this work with the hand-held shower heads? For those of us who use hand-held shower heads, the additional weight and clumsiness of some soap bar holder sound prohibitive.

But if you are determined, I would suggest trying it with various soaps already on the market and once you find one that fits your criteria, attempt to replicate the formula to the best of your ability based on the ingredient list.

 

[DeeAnna]

"...Question is not about mechanics..."

But the issue is you have to consider the mechanics first to decide whether the idea is viable. The short answer is I honestly doubt it will work.

The most important problem, as people have already pointed out, is that any bar soap will turn into thick mush or a thick pasty gel if the soap cannot fully dry between uses.

I wrote a longer post discussing the engineering pros and cons of your idea, assuming the bar could remain solid. Unfortunately I lost the post, and I'm not going to write it again. Suffice to say -- a liquid soap or liquid cleanser is the best product to use for a shower dispensing system.