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SudsyKat

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Well, I just made my first liquid soap - with lots of good input from AGriffin. I'll post about that separately because it was an interesting experience and it didn't go as planned.

For now, I wanted to just get some help with thickeners. I read some old posts about Xantham gum and Borax, but i wasn't really clear on the method for incorporating them. Could someone give a step-by-step of how you incorporate these (especially the xantham) into your soap solution? In case anyone's interested (and feel free to skip this if you're not), here's what I did and how it worked out for me:

I used Xantham gum in this batch I just made. I used 9 grams of the powder (My diluted soap mixture was a total of 1500 g (33% concentration), so that's less than 1% xantham gum powder). I read that you can do from .5% to 2%, so I started low. I added it to 2 ounces of very hot distilled water. I mixed it up and it was a gloppy gob. :shock: So, I added a little more hot water, but it didn't help much. I didn't want to add too much water, because I had already diluted my soap to a 33% mixture (I didn't anticipate having to use so much water for my xantham gum powder). i wasn't sure what to do at that point, so I decided to add this mixture to my soap solution. I figured that if it would dissolve properly, I could easily strain it out.

Then, I went back to these forums and found one person's method, which involved a stick blender. You're supposed to add the powder to some room temperature water and stick blend it. I decided to try another 9 g of powder. I boiled 100g of hot water (figuring that more water might be helpful). I'm not sure why I used hot water instead of room temperature - I guess I misread the instructions. Anyhow, when I stick blended the mixture, it was a very thick paste - not something that I could easily add to the soap mixture. Again, I didn't want to add much more water, so I decided to just stickblend this smooth, but pasty xantham mixture into the soap solution. I knew it might cause a ridiculous amount of suds or possibly just mess up the whole thing, but I was feeling experimental and didn't know what else to do.

I have not gotten any borax yet. For the next batch, I'll try using excess lye and neutralizing with borax. Again, I have no idea of exactly HOW to incorporate it into my mixture.

Thanks in advance! :D
 
Mix borax with near boiling water, it's extremely difficult to get it to dissolve in cold or room temp water. Add this solution to the dilluted liquid soap and mix. Allow to cool to room temp and determine if you need to add more.

Please note that borax does not nuetralize lye.
 
I thought, from what I've read here and in Catherine Failor's book, that Borax does neutralize lye. Now I'm slightly confused. :?

More importantly, I'd love to know how people incorporate Xantham gum, because I really didn't have much luck with it. It was ridiculously gloppy.

Thanks!
 
Technically borax does not neutralize lye. With that said it does lower the pH of liquid soap by acting as a buffer. It brings down the PH of liquid soap because it has a lower PH itself.

I've never tried Xantham gum.
 
Another way to thicken liquid soap is with salt water. I don't have my notes on me...but google and you should find how much...etc. I can't remember if Failor's book mentioned that or not.
 
I use a saturated saline solution. Anywhere from 25% - 34% salt to distilled water.

Add very slowly... A little goes a long way. Also pretty temperature sensitive.

Look at most liquid soaps you get from the store, you will see sodium chloride listed as one of the ingredients.

Borax tends to cloud the soap if you use to much, this is because of the buffering effect as it lowers the pH. You can correct that by adding more KOH solution.
 
I'm definitely interested in trying the salt method. Sounds less threatening than some of the other ingredients I could use.

In the meantime, I would love to hear about how (method) people have successfully used Xantham gum (because I have some more and I hate to write it off from one bad experience). :) I know you're out there, you Xantham lovers!!
 
I used xanthan gum once in one of my earlier batches of liquid soap. The soap was cloudy so I never tried it again. I added it to water and stick blended. I don't remember the amount used.
 
Well, lesson learned, right? So, I'm pretty sure that the separated soap is just going to stay separated if I leave it sitting. I shook it up yesterday, and today, it's starting to separate the way it did initially. So I guess my next question is - is there a way to make this stay emulsified and not separate? :?
 
Separation is usually unsaponified oil and/or free fatty acids. I've never tried to emulsify them, and if you did the resulting soap would not be clear.
 
Xanthan Gum in Liquid Soap

Yesterday, I experimented with Xanthan Gum in my Olive/Coconut LS (which already had a first dilution phase using a 25% solution). I used the XG at 1%, mixing it with Glycerin as recommended on one site. I heated the LS up slightly and stirred in the Gum/Glycerin mixture. (I stirred a little too robustly as there were loads of bubbles imbedded in the soap which dissipated during the night). The soap thickened okay, but it has an odd look to it ... almost like it wants to gel. It's not as clear as before but it's definitely not unattractive. This morning, I tried again, using a little less XG/Glycerin, and didn't stir quite as much ... also added a little alcohol for clarification. This batch looks a lot better but it still has a touch of cloudiness ... not as much as the previous batch. Also ordered some HEC from Lotioncrafters and will try that as soon as it arrives. And, in the meantime, am going to try Anne Marie's salt solution as a thickener. Will post results.
 
Xanthan Gum Update

After a few days in the bottle, I noticed my liquid soap (to which I had added Xanthan Gum) was a little "grainy" so I poured the soap into a pan and heated it slowly on the stove until it boiled. I then let it cool and poured it back into the bottle. Three days later the graininess has not reappeared and the soap is still clear so I'm assuming I needed to be more aggressive heating the soap during the first addition.

I've been doing some searching on how to incorporate HEC and found this site http://site.herbalnatures.com/blog2/2009/08/01/how-i-make-liquid-soap-body-wash/ where the author indicates she incorporates the HEC and Glycerin into the dilution water, heats it until it gels and then adds the undiluted soap paste to the gel. Haven't tried it (not sure how the soap would incorporate into a gel solution), but it sounds interesting and certainly worth a try.
 

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