Q&A for How to Make Liquid Soap

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  • Question
    Can I just use olive oil?
    Community Answer
    Yes, you can make soap using any oil, fat, or wax, but the amount of lye needed differs with different oils. Use a lye calculator like SoapCalc.net to determine the quantities.
  • Question
    Where can I get the raw materials for making a hand wash?
    Community Answer
    Bulk Apothecary is one source - they sell lye, oils, and other ingredients.
  • Question
    Can sodium hydroxide be used instead of potassium?
    Community Answer
    These two cannot be used interchangeably. Sodium Hydroxide is used to make a hard bar soap and Potassium Hydroxide is used to make liquid soap.
  • Question
    Can I use any other oil type?
    Community Answer
    Yes, but first you should know the function of the oil to make sure it will work in your soap.
  • Question
    Should I add an additional preservative to this?
    Community Answer
    You do not have to use a preservative. The soap solution is high enough that bacteria and mold cannot grow.
  • Question
    How much does it cost to make this soap?
    Community Answer
    The price would vary, depending on where you buy the ingredients from and what brand they are. If you are using ingredients that you already own, the soap could be practically free to make.
  • Question
    It states 33 oz of water. Is that for the diluting or for the lye mixture?
    Community Answer
    The lye solution should be mixed using only 16 oz, then once the paste has cooked for the 6 hour time period you heat the 33 oz of distilled water and add the paste to the heated water. Then let it stand for half a day to a day.
  • Question
    Can I make liquid soap in cold process?
    Community Answer
    Unfortunately no... not from scratch. You need it to gel, and the only way to do that is through the hp method.
  • Question
    What do I do if my liquid soap becomes too watery?
    Community Answer
    Try adding more grated soap to the mixture and boiling or blending it again to form a thicker paste.
  • Question
    Does the soap need to cure like with bar soaps?
    Community Answer
    Yes. The soap needs to cure for four to six weeks or longer.
  • Question
    What do I need to make the soap last for a long time and smell good?
    Community Answer
    You need some clay (not the kind used for pottery) for the oils you use to bind to. Some essential and floral oils can ruin the soap, so do your research carefully.
  • Question
    How much water is used to make the bar into a liquid soap?
    Community Answer
    Use one cup of water to one cup of soap flakes to make this recipe.
  • Question
    What are the anti-bacterial ingredients for making a long term liquid soap?
    Community Answer
    Essential oils and a liquid preservative. When it comes to preservatives, Liquid Germall Plus is my choice. Just half a teaspoon is enough for gallons, this is an effective cosmetic preservative.
  • Question
    How should I measure the ingredients for liquid soap?
    Community Answer
    You can use a kitchen scale -- digital if you prefer -- to make sure that your ingredient amounts are as accurate as possible.
  • Question
    Does it matter if the raw oils or fats are solid?
    Community Answer
    Yes, although if the raw oils or fats are solid, all you have to do is heat them up to melt them into a liquid. (I have found that the room-temperature solid fats melt at a temperature of about 120 to 160 degrees F, which is the approximate temperature of a crock pot set on low.)
  • Question
    Do I need to use glycerin?
    Community Answer
    No; glycerin is just for moisturizing and making the skin smooth.
  • Question
    I made liquid soap from a Dove bar, but it makes no lather. How do I get lather?
    Community Answer
    You could experiment and add different things, such as honey, for example. You can add different amounts depending on what kind of texture you really prefer.
  • Question
    How do I grate the soap?
    Community Answer
    You use a grater (like a cheese grater, one is pictured in the article). You rub the soap bar back and forth across the grater until you have a large pile of soap shreds.
  • Question
    Does the coconut oil have to be bought in liquid form or can I melt the solid stuff?
    Community Answer
    You can melt the solid stuff. It's the same thing. All coconut oil is solid below 76 degrees Fahrenheit and starts to melt above that temperature.
  • Question
    The liquid soap solidified after cooling. What should I do?
    Community Answer
    Add more water to your soap mixture until it is the right consistency. You have to experiement with the amounts of soap and water in your mixture.
  • Question
    Once I grate it and mixes with water my liquid soap looks pearlescent. How can I make it transparent?
    Community Answer
    You cannot make transparent liquid soap with NaOH, because the bar soap you produce will not be transparent.
  • Question
    Is this antibacterial? And if so, which ingredients make it antibacterial?
    Community Answer
    Not necessarily. To make a soap antibacterial, specific ingredients must be added that act against bacteria.
  • Question
    How do I make the thickened liquid soap more watery?
    Community Answer
    That may have happened be as a result of improper mixing of your ingredients (i.e., low solvent quantities). You can add a few drops of distilled water and heat it, with continued stirring, until you attain the fluidity desired.
  • Question
    What is the function of the ingredients composition in liquid soap making?
    Community Answer
    In liquid soap, potassium hydroxide is the alkali which actually makes it soap. The oils are basically the fat, scent and what gives it colour (if it is coloured).
  • Question
    Can I use fruit juices instead of water?
    Community Answer
    No, as the sugars in the juice interfere in the reactions and can cause the soap to mold. Always use distilled water.
  • Question
    Can I use coconut oil instead of glycerin when making liquid soap?
    Community Answer
    Coconut oil is an anti-inflammatory, keeping skin moisturized and helping heal wounds. The medium-chain fatty acids found in coconut oil also possess antimicrobial properties that can help treat acne and protect the skin from harmful bacteria. So yes, you can use coconut oil.
  • Question
    How do I not have my grated bar of soap be slimy when making liquid soap?
    Community Answer
    Make sure it is dry first by keeping it in the sun to dry and don't add water before you grate it.
  • Question
    Can l leave grated soap overnight?
    Community Answer
    Yes, just make sure you keep it covered over in a bowl with a kitchen towel or clear wrap. Try not to leave it for many days though.
  • Question
    What is oz? Like 33 oz. distilled water?
    Donagan
    Top Answerer
    "Oz" means "ounce" or "ounces."
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