Huwebes, Disyembre 26, 2013

Experiment: Cetyl Alcohol in CP soap

In a research conducted by Sir Kevin Dunn, a chemist with a wide knowledge on soap making as a science, he said that adding Cetyl Alcohol to cp soap is like adding Jojoba oil. 

Cetyl Alcohol is used in lotions as a thickener and adds slip and glide. You can research more about it to know its uses in lotions and creams. 


I took my time to try it after a couple of experiments. 

Sir Kevin Dunn suggested its usage at 5%. I modified my recipe of a 32 oz. oil batch to contain the 5% cetyl alcohol as part of superfat. My recipe was:

Oil Phase
27 oz Coconut Oil
5 oz Shea Butter
Superfat
1.6 oz Cetyl Alcohol (5%)

But I paused here and thought 1.6 oz is too much so I tried my first experiment at 3%. So my superfat is:

Superfat
.96 oz Cetyl Alcohol 
+ .64 oz Mango Butter
(to compensate for the 1.6oz total Superfat)

How do you add it to your batch?
Heat the oils along with the Cetyl Alcohol.
  Do not add Cetyl at trace. Cetyl tends to solidfy at room temperature and below making your soap batter consist clumps of cetyl. It will also tend to disperse unevenly throughout the batter. 

The .64oz Mango butter is for adding at trace. 

It's easy as that. 

Experiment:


L-soap with Cetyl Alcohol. R-soap without Cetyl Alcohol. 

Both soaps have the same recipes, amount of colourant, superfat, ingredients. 

Properties of the soap with Cetyl Alcohol
1. Color
Cetyl alcohol gives the soap an opaque color which tends to give it a 'lighter' touch of color. See picture above. 

2. Lather


The soap above is the soap without Cetyl Alcohol. As you can see, it gives quite a creamy lather and bubbles are small & minimal. While the soap with CetylAlcohol  (below) gives bigger bubbles but not a creamy lather. 


3. Slip
The soap with Cetyl Alcohol has a slip that a normal cold processed soap does not have. I don't know if its a good thing or a bad thing but I like it. 

4. Hardness

The picture above is the soap w/out Cetyl. As you can see, I placed pressure in the middle of the soap and there was quite an impression in the middle. But below, you'll see that the soap with Cetyl Alcohol didnt even have an impression. The soap is actually hard. 


These are the properties I would firstly want to share with you. I'll talk about Cetyl Alcohol more soon!

Hope you got a few pointers! Keep in touch and let me know how yours turned out too. 

xSoap Authority

7 komento:

  1. You do realize that adding something at trace doesn't make it superfat? Saponification takes up to 48h so you can't assume that mango butter will be your superfat just because you add it at trace. It will still react with lye.

    TumugonBurahin
  2. No, not really. You're wrong. Saponification has no definite time measure. Saponification takes place as soon as the chemical reaction has taken place. It is not measured by 24-48H. It takes the NaOH to saponify triglycerides as soon as they are both introduced. The thought of superfat means going beyond the original oil quantification in the recipe so as to lessen the quantity of the corrosive effect of NaOH. Yes, it will still react to lye but you lessen the active sites of triglycerides in binding for saponification so the oil content prevails. Next time, be in depth with chemistry before reacting.

    TumugonBurahin
  3. NO no no. You show the K. Dunn experiment and you disagree with his theory. It does not matter the order of adding super fat and it has the meaning of its reactivity. The unsavory fraction is, of course, beyond that.

    TumugonBurahin
  4. Great experiment, thank you! We are considering adding cetyl alcohol to our product line and I am doing as much research as possible before experimentation. This was super helpful. Thank you.
    www.soulsalve.co

    TumugonBurahin
  5. I just made a batch (15oz OO, 9oz CO, 5oz cocoa butter, and 1oz cetyl alcohol, 7% SF) and it took a long time to set up at first, and 12 hours later it's still somewhat soft. I know it's not gone through enough time yet but the texture of it is like a doughy paste, not the usual smooth icing like texture of a basic recipe. I recognize this quality from working with cetyl in a solid serum I made a while back. Anyway, I'm wondering if what I'm saying sounds familiar and I should relax or if it sounds like I did something wrong. Thanks!

    TumugonBurahin
    Mga Tugon
    1. OO is the problem, it takes a long time to harden, so I'm sure it eventually did harden, sodium lactate would have helped with that.

      Burahin
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