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Soapy Science: Citric Acid in Soap Making
If you take a look at any of our recipes, you will see a common ingredient in all of them- citric acid. Citric acid is one of our...
ultimatehpsoap
Jul 6, 20198 min read


How to Calculate a Dual-Lye Recipe
"How do I calculate a dual-lye recipe?" The most common and obvious answer is "Use a calculator." Well duh, why didn't I think of that?...
ultimatehpsoap
Jul 5, 20192 min read


Super Easy 5-Minute DIY Shaving Soap: Martin de Candre Italian Soft Shave Soap
Shaving soaps have developed their own popular niche market as well-groomed facial hair and men's skin care have become more acceptable...
ultimatehpsoap
Jul 1, 20196 min read


Chemical Resistance: How to Make Soap Safely Using Polypropylene and Stainless Steel
Sodium hydroxide or NaOH is a caustic and highly alkaline chemical. When added to water, the Na+ and OH- ions dissociate. This part of...
ultimatehpsoap
Jun 26, 20195 min read


Do I need to use a preservative in liquid soap? Learn about microbes, water availability and more!
Excerpt from the book The Ultimate Guide to Liquid Soap www.ultimateliquidsoap.com One of the most commonly asked questions that I see...
ultimatehpsoap
Jun 20, 201913 min read


Cinnamon Essential Oil in Soap & Skincare Products
Cinnamon essential oil is one of the most studied essential oils and has been used in hundreds of different research projects over the...
ultimatehpsoap
Jun 19, 20194 min read


Easy DIY Clear Soap- Learn How to Make our "Ultimate Transparent Soap" in Less than 10 Minutes!
For decades we have made beautiful hot process soaps with a process we call High-Temperature Hot Process or HTHP for short. HTHP is a...
ultimatehpsoap
May 24, 20195 min read


Vanilla Hazelnut Luxe Coffee Soap (10-Minute Hot Process Soap)
There is nothing more invigorating than the smell of sweet, warm and aromatic coffee in the morning. We took advantage of this and all of...
ultimatehpsoap
May 22, 20193 min read


Creamy Lemon Calendula Hot Process Soap (10-Minute Hot Process Soap)
Spring time is finally here! What better way to celebrate than making this beautiful, bright and fresh Creamy Lemon Calendula soap? We...
ultimatehpsoap
May 13, 20192 min read


Vanillin & Discoloration, the TRUTH about Vanilla Stabilizer- Plus, How to Make Your OWN stabilizer!
Learn more about discoloration due to vanillin, the TRUTH about vanilla stabilizers & how to make your own vanilla stabilizer for $0.05/oz!
ultimatehpsoap
May 11, 20199 min read


Polyunsaturated Fats: Oxidation and Rancidity in Oil and Soap
The Ultimate Guide to Hot Process Soap goes into great detail about the chemical composition of fats and oils. In the book, you will...
ultimatehpsoap
Jan 21, 20196 min read


Gentle Cocoa Butter 10-Minute Liquid Soap Paste
High Temperature Liquid Soap (HTLS) The education and experience gained from reading the Ultimate Guide to Hot Process Soap can be...
ultimatehpsoap
Jan 14, 20193 min read


Vinegar in Soap Making- Blessing or Bust?
Modern day soap making is so exciting because there is SO much information and many ingredient options available. You can truly make a...
ultimatehpsoap
Jan 3, 20196 min read


DIY Soap Cutter for Under $15- Professional Results, Budget Price.
Although I am good at many different things, and consider myself an experienced soap maker, I have a weakness: cutting straight lines. I...
ultimatehpsoap
Jan 3, 20193 min read


Reader Question: Liquid Lactic Acid in Soap?
I have been asked the question "Can I just add some liquid lactic acid, like I use for facial peels, to my soap after the cook to make it...
grandhavensoap
Jan 3, 20194 min read


DIY All-Natural Melt & Pour Soap Base (10-Minute Vegan & Palm-free)
Use the knowledge and experience gained from The Ultimate Guide to Hot Process Soap to begin your journey into the world of DIY melt and...
ultimatehpsoap
Dec 31, 20181 min read


Soapy Science: Beeswax in Soap
Beeswax is a chemical wax comprised mainly of esters of fatty acids and long-chain alcohols. Sodium hydroxide breaks the bond between the...
ultimatehpsoap
Dec 28, 20182 min read


What the Suds!? Cetyl Alcohol in Soap
I have talked about the benefits of cetyl alcohol and it's effects on lather stability many times and I use it as an additive in almost...
ultimatehpsoap
Dec 19, 20183 min read


Fatty Acids for Beginners: Why Every Soap Maker Needs to Learn Them FIRST
One of the most common questions that I am asked as a teacher is “What are the different oils and what are their benefits are in soap...
ultimatehpsoap
Dec 17, 201810 min read


Easy Beginner Soap Recipes: FIVE Classic Soap Recipes Made with Three Grocery Store Oils
These are five classic recipes that ALL soap makers should create throughout their soap making careers. They are the perfect recipes for...
ultimatehpsoap
Dec 12, 20182 min read
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