If you are new to soapmaking it is very important to pick the right mixing containers and bowls for making soap. The #1 rule when choosing a mixing container is to make sure it is not aluminum. Sodium hydroxide (lye) reacts with aluminum. Stick with stainless steel, heavy duty plastic and glass. Here are some options.

How to Pick Containers for Soapmaking (What is Safe to Soap In-)

When it comes to plastic, choose plastic with the plastic code #5 on it, which means that the container is made from polypropylene. It can take high heat and is sturdy.

Containers for Mixing Your Soap

Stainless Steel Pots

stainless steel for making soap

A stainless steel pot is great to make soap in. Lye does not react to stainless steel. When you get into making bigger batches of soap, a big stainless steel pot is a lifesaver. Make sure your pots are stainless steel and not a blend of stainless steel and aluminum.

Rubbermaid Bowls

soapmaking containers

These Rubbermaid bowls hold two-pound soap recipes perfectly. I use these all of the time and even use them in all of my classes that I teach. Look for the triangle with the #5 in it.

Plastic Pitchers

containers for soapmaking

Plastic pitchers are great for mixing soap in. You can find them at dollar stores, Walmart and even thrift shops. Stay away from hard brittle plastic pitchers, such as those used to serve tea and water at restaurants.

Stainless Steel Bowls

You can make soap in a stainless steel bowl. Make sure that it is stainless steel and not a blend of stainless steel and aluminum.

Plastic Buckets


Buckets are great to make soap in. You probably get some of your raw materials in buckets. A gallon bucket will hold up to 6 pounds of soap. Once you up your production (learn about master-batching), you can use five-gallon buckets to make batches of soap up to 40 pounds.

Glass Measuring/Mixing Bowls


Large glass measuring bowls are great for mixing soap in. You can get up to 4 pounds of soap in the larger ones. (Never mix your lye in glass containers, even Pyrex).

Containers for Lye Solution

You can use any of the above containers, EXCEPT for glass containers. Never mix your lye solution in glass. Even Pyrex has been known to etch and shatter when used with sodium hydroxide.

Here are some other options for containers to mix your lye solution in.

Paint Mixing Containers


You can find these paint mixing containers in the paint section of home improvement centers. The small ones are great for mixing up your lye solution. Overtime the plastic seems to get a bit brittle and you should replace them.

Plastic Measuring Cups


These containers are great for mixing lye solution in. You can find them at dollar stores, Walmart and kitchen stores.

Again, I can’t stress enough to not mix your lye solution in glass. The heat of the solution shoots up to 160+ degrees F and this quick fluctuation of temperature can make your glass shatter.

Containers for Fragrance/Essential Oils

Glass Jars and Measuring Cups


You should only measure fragrance oils and essential oils into glass or stainless steel. We love to use mason jars as we always have some on hand. Fragrance oils and essential oils can eat through plastic and Styrofoam, so never measure into plastic drink cups.

For my more experienced soapmaker readers, what are you favorite containers?

Happy Soaping!

-Amanda Gail

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Thanks for being a part of the Lovin’ Soap community! We’re so glad you’re here!

Now through March 1st, we are having a presale on our newest eClass, Clear Transparent Soap from Scratch!

In this video eCourse, I will show you:

  • How to formulate your own transparent soap recipe that is remelt-able and reusable…similar to MP soap base.
  • We’ll go over base oils and solvents that are available to use and why you would select each type of ingredient.
  • How to make quick hot process transparent soap from scratch. It only takes about 20 minutes once you get the process down!
  • How to remelt and use your base for future projects.

About the soap:

  • The ingredients we use include coconut oil, stearic acid, castor oil, sodium hydroxide, everclear (grain alcohol) and sugar.
  • The soap is remeltable and you can work with it like melt and pour soap base.
  • You can create bars of soap or embeds that you can add to regular cold process soap.
  • You’ll get different varieties of clarity in your soap…we’ll talk about that.

The class will be delivered in a a series of videos and downloadable PDF’s. You’ll have forever access and be able to watch over and over again as you want.

Happy Soaping! -Amanda Aaron