How Much Should I Superfat My Soap?

An average superfat is usually between 1–7%. This means 1–7% of oils in the recipe are “free-floating” in the bar and were not turned into soap. A superfat is also referred to as a “lye discount.” This is because in order to turn fewer oils into soap, you reduce the amount of lye in the recipe.

How do you calculate Superfat in soap making?

Superfatting is either adding an extra amount of oil to your soap recipe but keeping the lye amount the same, or using the same amount of oil and less lye. For example, using 9 1/2 ounces of lye instead of 10 ounces would amount to percent superfatting.

What is the importance of Superfatting in bar soap?

Superfatted soap is less harsh and more moisturizing on the skin. It also gives the soapmaker a little more wiggle room with their calculations, since individual plants and oils can vary with their saponification values. This provides an extra level of safety in ensuring there’s no leftover lye.

Can you Superfat liquid soap?

Tip: You cannot superfat liquid soap to the same degree that you can with bar soap. The max you can superfat liquid soap is around 3%. However, a 3% superfat is actually very high if you want to add a scent!

How much lye do you need for soap?

The Pallas Athene Soap company formulated a quick and easy cold process soap recipe that requires exactly 20 ounces of lye (the size of 1 canister from Certified Lye™) and yields a superior bar of natural soap.

What is Superfat in liquid soap?

Many soapmakers like to have some extra oils in their soap that are leftover and not bound to lye. Any extra oil left in the soap and not attacked by the lye is called a ‘superfat. ‘ The terms ‘superfat’ and ‘lye discount’ can be used interchangeably.

How do you calculate soap ingredients?

Calculating the Amount of Soap Needed to Fill a Soap Mold

  1. Calculate the volume of the mold in cubic inches.
  2. Multiply the volume of the mold by 0.4 to find the total amount of oils in the recipe. …
  3. Enter that amount of oils into an online lye calculator to get the final recipe quantities.

Why did the soap have to cure in the molds?

It needs several days to harden in the mold. Then, it needs to cure for 4-6 weeks to allow excess water to evaporate. Curing creates a firmer bar that lasts longer in the shower. All this waiting can be the hardest part of cold process soapmaking!

What does lye concentration mean?

Lye concentration is the grams (or ounces) of alkali contained in 100 grams (or ounces) of lye solution. Some examples — Lye concentration of 33% means there are 33 grams of alkali in 100 grams of lye solution. Water makes up the rest of the 100 grams. In other words, the water weighs 100 – 33 = 67 grams.

What oils make a hard bar of soap?

Lathering hard oils include coconut oil, palm kernel oil, babassu oil, and murumuru butter. On the other hand, conditioning hard oils are oils and butters such as palm oil, cocoa butter, lard, tallow, kokum butter, illipe butter, sal butter, mango butter, and shea butter.

What is the fastest way to cure soap?

Curing Soap Faster: Speed up the process

  1. Reduce the humidity. Most people make soap in their homes, or if they are lucky enough, in their workshops. …
  2. Zeolites. Zeolites are rocks that pull moisture out of the air. …
  3. Fans. …
  4. Use less water. …
  5. Space heater. …
  6. Good Airflow. …
  7. Too much lye. …
  8. Using the oven.

What is SAP value in soap making?

Saponification Values in Soap Making. SAP values are the numeric values that allow you to calculate the precise amount of sodium hydroxide (NaOH) or potassium hydroxide (KOH) required to fully saponify a given weight of oil/s.

What is the lye to water ratio?

The lye to water ratio of the lye solution is roughly 1 part lye to 2.3 parts water. This is equivalent to roughly 30% lye and 70% water.

How do you calculate soap percentage?

Divide each individual weight by 44 to get the percentage of each oil in the recipe. Let’s say you want to make a 7-pound (or 112-ounce) batch of soap. (Remember, that’s just the measurement of your oils.

What is a soap calculator?

A lye calculator is a tool that helps simplify things by calculating the amount of lye you need according to the oils you choose for your recipe. To use a lye calculator, you input the oils you want to use, the amount of each oil you plan on using, and you can also specify if you want to superfat the soap or not.

How much fragrance should I add to soap?

For a strong scent, you can add 0.7 ounces of fragrance or essential oil per pound of cold process soap. For melt and pour, you can add 0.3 ounces per pound. This number will vary based on what oil you choose.

How do you measure soap for fragrance oil?

To calculate your fragrance:

  1. Use a candle and soap scale for weighing your fragrance oil.
  2. Determine how much wax you’re going to melt. …
  3. Place a small dixie cup or glass on the scale and “tare” it so that the weight of the cup is removed. …
  4. Pour 1 ounce of fragrance oil into the cup.

How do you discount water with CP soap?

You don’t need to change the lye amount. So if your recipe calls for 15 ounces of water, that would be 15 x 0.9 = 13.5 ounces. If you want a 7% discount, that’s 15 x 0.93 = 14 ounces. A 12% discount would be 15 x 0.88 = 13.2 ounces.

What happens if you put too much lye in soap?

When soap is made with too much lye, it is called “lye-heavy.” This means there is extra, free floating lye that was not made into soap during the saponification process. Lye heavy soap can be irritating when applied to the skin and should not be used or sold. Lye heavy soap is often crumbly or dry feeling.

How much titanium dioxide do you add to soap?

To use titanium dioxide in cold process soap, we recommend dispersing it in a lightweight liquid oil at a rate of 1 tsp. colorant to 1 Tbsp. oil.


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