Castile HTHP Experiment- Ultimate Guide to Hot Process Soap

Join us as we perform a HTHP castile soap experiment. The Ultimate Guide to Hot Process Soap teaches students how to formulate informed High Temperature Hot Process (HTHP) recipes based on saponification and fatty acid soap science and the knowledge and use of physics. Although HTHP recipes are best made with what teach as "informed recipes", the process can still be used to make recipes low in unsaturated fats, although not as quickly or efficiently. When we add these components to other factors that accelerate the saponification reaction rate like increased chemical surface area and mixing and increased heat energy from the HTHP method, in addition to a reduction in water and reaction accelerants, we are quickly able to increase the rate of reaction and create a hot process soap in just a few short minutes.
Today we will perform an experiment that creates a fully saponified castile soap made from 100% olive oil using the HTHP method. The recipe will be made with a 28% water concentration and will be made without a crockpot, although you may use one if you prefer. In addition to olive oil, lye, and water, we will add clove oil which contains eugenol, an alcohol that has an acidic proton that acts as a reaction accelerant. We can add eugenol to recipes that are high in unsaturated fats and it will immediately react with the sodium hydroxide and increase the overall reaction rate. Because of the small amount used and the immediate reaction, there is no change in fragrance or risk of irritation.
This experiment makes plain ole fashion castile soap, but please feel free to customize it however you would like. If you want a more fluid recipe, you can cook with a water discount and then add the moisture back to the recipe after the saponification process or use a higher water concentration at the beginning. You can add milk, yogurt, sugar, fragrances or any other additives that you wish to use.
Recipe:
-32oz olive oil (6% cook superfat)
-8.96 ounces water (This is a 28% water concentration and is very high discount for hot process soap. It will result in a very thick soap at a faster rate. For a more hydrated soap, use 32% or 10.24oz or the full 38% at 12.16oz)
- 4.07 ounces NaOH
-Few drops of clove (1.5-2.5ppt for an exact measurement, for this play batch, I just sprinkle a few drops)
You can also use finished castile soap or add stearic acid for a trace accelerant if you don’t have clove oil (be sure to calculate stearic acid in soap calculator)
Directions: Use the knowledge and directions from The Ultimate Guide to Hot Process Soap for the HTHP method (continuous immersion blender high temperature hot process)
1. Because the recipe as a decreased rate of reaction, you can use a higher starting temperature. I heat my oils to 230-250F (do not exceed 250F).
2. Complete the HTHP continuous mixing process until the soap has finished with any volume expansions due to the chemical reaction and heat, then cover with plastic wrap. Do you have a weak immersion blender? Use the 2-2 method instead of continuous mixing. Mix for 2 minutes, cover and rest for 2 minutes. And repeat until finished.
3. Stir every few minutes until the pH has reached soap-neutral. This is the perfect time to do your dishes and clean your area!.
To test, make a soap solution with 1g soap in 100g water. If you are an experienced hot process soap maker, this is not necessary; however, if you would like to test the pH of this particular soap, please be aware that the soap is very hot and it is not advisable to test using the zap-test or by holding, unless cooled, thus, my use of a cup is necessary for this example.
4. Mold your recipe (you may refrigerate or freeze if desired)
5. Cut your Castile soap AS SOON AS IT IS HARD ENOUGH! Because this soap has a low water concentration and because it is created using HTHP, it will be incredibly hard. I recommend checking after an hour. Enjoy a small sample of your castile hot process soap and cure the rest for added hardness, increased lather stability and a longer lasting, gently cleansing soap!
Video: I left the camera on the entire time when shooting this so that you could see exactly how the process works and how long to let it sit, in addition to checking the temperature and the pH of the soap. Please disregard all of the extra noises.
www.ultimatehpsoap.com
The Ultimate Guide to Hot Process Soap- Soap Science, Recipe Formulation, Low Temperature Hot Process and High Temperature Fluid Hot Process. With over 400 pages, our book has everything you need to know from start to finish about hot process soap making, including how to make stunning fluid hot process.
Ready to change your thought process on hot process? Join the UG2HP family today!

[@susi19611]

I purchased the book recently and I absolutely love it. It’s like going to hot process soap university. What a fantastic book.

[@lisaforde1641]

The utter beauty in watching a soap rise up

[@valeriereed9118]

Thanks for the demo! It was very helpful. My first time making 100% olive oil soap and it came out perfectly.

[@neva-surrender]

I luv this method, I will have to try it

[@nballesterob]

I could stay all day watching videos of the process. I love it

[@marcusezequiel8093]

instablaster...

[@nicholehodge532]

That stick blender is a beast!!! What brand is it?

[@shaimabukhamseen6451]

Waw, that really fun experiment. The other tutorials I did watched take forever to finish the specification. However, you did it in about 15 min . Thank you for every thing..

[@ElisaMonroe]

I've always found olive oil takes a bit longer to break down than some other oils, but such a great soap. I've experimented with starting out in a psuedo CP fashion, then finishing up in the sunshine outside during the summer, letting the solar heat process the soap the rest of the way to gel phase. Great results, reducing the use of electric. Not doable on overcast, rainy, or outside of the summer season, for obvious reasons. But fun - I call it my bushcraft soap XD.

[@boop7313]

I love this so much.

[@molliedavis7277]

I’m going to try this one in my crockpot without the trace accelerator and at 32%. Thank you for the wonderful book!

[@darrell6845]

Is that a bowl or a heated pot?

[@Jstdine]

Can you achieve the same results with a electric hand mixer?

[@kuzhal1411]

Hi, I tried stick blend hp soap at first time, I mixed my oils(102c) and lye solution (77c).. I blend for a min ,it's started to get thick trace. It doesn't voloconic. Finally I added 2 spoon yogurt @ 88c . It was nearer to gel stage but again I added 2spoon yoghurt to avoid more thickness.. but it totally turned to fluid didn't meet gel stage.. waited for some times its was thick trace only not gel then i poured on mould.. now what should I do.. Is it saponified or else I want to rebatch pl help..

[@THEULTIMATEGUIDETOSOAP]

If your recipe was made with cold process, it will saponify in the mold. The same theory applies to hot process soap so long as it reached trace and an emulsion was created, it too will saponify! After unmolding, test the pH for safety and you should be good to go! For more information about hot process soap, be sure to check out our book The Ultimate Guide to Hot Process Soap at www.ultimatehpsoap.com

[@kuzhal1411]

@@THEULTIMATEGUIDETOSOAP hi, I made with hot process only.. stick blend hot process method... And got the above mentioned issues

[@user-p6-3561]

cool

[@veronicawilliams2612]

I got. The same mold my soap got stuck had to hammer it out I show want to see how you do yours.

[@THEULTIMATEGUIDETOSOAP]

With a silicone mold, it should be removed very easily. With this recipe, it hardens in about 20 minutes after molding and needs to be cut then. See the video information for more information!

[@nurieta1755]

Hi. I follow your account and the tutorials you make. I would like to ask you if it is possible that the book you sell can be translated into Spanish. It would be a great help and you would be very successful in the Latin world. Greetings.

[@THEULTIMATEGUIDETOSOAP]

We don't have a version published in Spanish, but you can use translating tools like Google translate! About 70% of our students live outside of the US and for many, English is not their first language or even a language spoken in their homes.

[@moilee-rodriguez7517]

Volcanooooo

[@TracyD2]

How long to cure? I know what I’m doing today. Thank you

[@THEULTIMATEGUIDETOSOAP]

You can find more information about hot process curing here: www.ultimatehpsoap.com/post/the-hot-process-cure

[@khione8044]

@Tracy Cure time is the same for both CP and HP.

[@TracyD2]

@@khione8044 Thank you

[@khione8044]

@@TracyD2 You're welcome

[@sush0511]

What is the name of this bowl in which you are making the soap

[@THEULTIMATEGUIDETOSOAP]

Any polypropylene or stainless steel bowl will work :)

[@nettdee7116]

I'm scared my stick blender will burn out

[@THEULTIMATEGUIDETOSOAP]

We made this video as part of our "Unsaturated Fatty Acid HTHP Challenge" to show how recipes high in unsaturated fatty acids affect saponification. Castile soap is a much different than our other HTHP UG2HP recipes because it has a very high concentration of unsaturated fatty acids and requires extra mechanical mixing. We love our super duty All-Clad blenders for this very reason! Read the video comment for more information or use LTHP for a fun and easy cook... with minimal mixing! Thanks for watching and happy soaping! For more information about formulating and creating 10-Minute fluid hot process recipes, be sure to visit www.ultimatehpsoap.com.

[@veronicawilliams2612]

My crazy butt say seething here looking seeing what's next I want to know what you put n there before the smell good oil was it coconut butter oil what..

[@THEULTIMATEGUIDETOSOAP]

The only thing added to the soap is clove essential oil because it contains eugenol which accelerates trace. There is more information about this in the video information!

[@Lacroix999]

I’m confused as to how this is hot processed soap if it’s not being cooked at all and just sitting in the bowl

[@THEULTIMATEGUIDETOSOAP]

Hot process is a method of soap making that uses heat to accelerate the reaction rate of saponification and creates a finished soap by the end of the process. This experiment and all of our soaps are made with hot process and our soaps are all gelled and pH neutral after several minutes.

[@Lacroix999]

The Ultimate Guide to Hot Process Soap yes, I understand that, but where is the heat coming from? The soap itself?

[@THEULTIMATEGUIDETOSOAP]

@@Lacroix999 The oils are heated before the start of the video. This is noted in the video comments, noted in the experiment instructions and it is also shown when the temperature of the oils is taken with the digital infrared thermometer at the beginning of the video. This is also combined with the exothermic reaction created by saponification itself. The directions and complete details for how to make hot process soap using HTHP, including the chemistry and physics behind the process, are provided in The Ultimate Guide to Hot Process Soap if you are interested in learning more.

[@leroybrownie9188]

You clearly need to do more research about high temperature hot process soap making, then you'd understand what's going on here

[@stephensonkrista]

After all that and you didn't cut the soap for us? Lame sauce!

[@THEULTIMATEGUIDETOSOAP]

Spoiler alert- it ends with a white plain bar of soap! Just kidding, sort of. At this time, we didn't have the tools, skills, or knowledge on how to edit videos, so it was quite difficult for us to get everything in one crummy cellphone shot. A few years later and we can finally add audio, clip a few parts together, and make pretty cover pictures.... although, there is still a LOT to learn. Believe it or not, not everyone who makes KZbin videos is great with technology, certainly not Ashley lol. We are getting better though (slowly)! Which is a good thing! Ashley @ UG2SOAP

[@stephensonkrista]

@@THEULTIMATEGUIDETOSOAP that is understandable! Thanks for the reply :)

[@donnanail9597]

@@THEULTIMATEGUIDETOSOAP That was a thoughtfully, gracious and professional response. You are an intelligent instructor, patient and sweet (save the technical wizardry at the time ;). I LOVE ❤️ watching and learning from you. XOXO ♥️

[@someinteresting]

Hot process produce some very chuncky soap. I don't like it.

[@THEULTIMATEGUIDETOSOAP]

This is a false notion and not all hot process soap results in a thicker, more viscous, and textured consistency. We create lots of gorgeous fluid, pourable, and swirled hot process soap! Check out our website for more examples of all of the beautiful designs you can make with hot process at www.ultimatehpsoap.com

[@timj5786]

Castile soap.? I believe that Castile soap is a liquid soap not a bar. I watched your video to the end expecting to see how to make liquid soap not another gazillion bar recipes

[@THEULTIMATEGUIDETOSOAP]

Castile soap by definition is a soap made with 100% olive oil. It is a recipe that has been made for thousands of years (jabón de Castilla or in Latin, sapo castilliens). Only recently (early 1900s) did soap makers begin to make it as a liquid soap because the science and technology has increased which made it possible to synthesize potassium hydroxide, an alkali that is more water soluble than sodium hydroxide. Thus, castile soap can be made with NaOH for a bar soap or KOH for a liquid soap. If you are searching for a liquid castile recipe, I suggest using "liquid castile soap" for your key words. This video was meant as an experiment and is part of our UG2HP curriculum. HTHP is High Temperature Hot Process is a method of hot process bar soap making, which is indicated in the title and discussed in great detail in the video information. We offer full instructions and details on how to make liquid castile soap, in addition to hundreds of other topics and recipes, in our new book The Ultimate Guide to Liquid Soap. Best wishes and happy soaping!

[@timj5786]

@@THEULTIMATEGUIDETOSOAP Apologies, I am new to soap making & live in Edinburgh where not many people make soap. I found your video informative non the less. Can you tell me how soon I can use soap made by hot process as cold process I must wait 4-6 weeks. Thank you for your reply

[@THEULTIMATEGUIDETOSOAP]

@@timj5786 The wording of your initial comment was very off-putting but it appears you were just misinformed. And that's ok! There is a lot of information out there and sometimes it's difficult to find the right answer. We cover this topic in great detail in The Ultimate Guide to Hot Process Soap book, but until you get your copy, this blog post will help better answer your question: www.ultimatehpsoap.com/blog/the-hot-process-cure

[@timj5786]

@@THEULTIMATEGUIDETOSOAP Again it was not my intention to be a dick & I sometimes should probably do more research before sending comments. I have subscribed to your channel & will be watching all your videos in time. Thank You for your patience with this baby soap maker

[@timj5786]

BTW as a way to further my learning ( & show you my apology was sincere ) I will be purchasing your book. Thank you again