In the world of eco-friendly DIY products, castile soap is often a main ingredient, which may leave you wondering what it’s used for.

A feature image for a blog post about what castile soap is used for.

In this post, we’ll give you all the info on this popular ingredient in DIY cleaners, such as what it is, where to get it, how it’s used, and a few cautions.

Castile Soap Is Available in Canada

Canadians will be pleased to know that such a multi-use environmentally-friendly cleaning option is readily available in Canada.

Versatile and Eco-Friendly

Knowing more about the versatility and environmentally-friendly nature of castile soap may inspire you to add more DIY products to your daily routines.

(This post contains affiliate links and as an Amazon Associate I earn from qualifying purchases.)

What Is Castile Soap?

According to, castile soap is named for Castile, Spain, where it was originally made from the abundant olive oil of the region. It’s also made from coconut, hemp, sunflower seed, and jojoba.

The oils are mixed with an alkali, depending on if you want a solid bar soap or a liquid soap. Sodium hydroxide is used for solid castile soap and potassium hydroxide for liquid.

Gentle for People and the Environment

Whether you use bar soap or a liquid, castile soap is known for being gentle for people and the environment. You can see why it’s such a versatile ingredient for many DIY household and personal care products.

Many Personal and Household Uses

And, many people use this biodegradable soap just as it is for a multitude of cleaning and personal care jobs because it’s also fine to use just as it is.

Next, we’ll look at what you can do with this popular environmentally-friendly product.

What Is Castile Soap Used For?

Castile soap can be used alone or mixed with other ingredients for many purposes. In personal care products, people often add other oils or essential oils for moisturizing and fragrance.

Some uses include:

These are just some of the many things you can do with castile soap. If you do an online search, you’ll discover many videos and blog posts where people share their DIY recipes and uses for this soap.

Now that you know about its versatility, you’re probably wondering where you can find it.

Where Can You Buy Castile Soap?

After people find out how versatile and eco-friendly castile soap is, their next question is usually, where can you buy it?

The good news is it’s not difficult to find. One popular brand of castile soap and other eco-friendly products is Dr. Bronner’s. The products are available in Canada, both in stores and online.

Dr. Bronner’s Castile Soap in Canada

Dr. Bronner’s organic castile soap is an eco-friendly product that is very versatile. It has many personal and household uses. And, you can feel good about using it.

This company is committed to using healthy and sustainable practices to produce this environmentally-friendly soap.

They are third-party certified for:

  • USDA Organic
  • Oregon Tilth Certified Organic
  • Regenerative Organic Certification
  • Fair for Life
  • NSF/ANSI 305 standards
  • Leaping Bunny
  • Vegan Action
  • B Corps™
  • Non-GMO
  • OK Kosher

This company also supports regenerative organic agriculture, innovative packaging changes, and strives for zero-waste production, and many activist programs to create a better world.

Use the convenient link above to easily order Dr. Bronner’s castile soap and use it for your purposes.

Tips for Using Castile Soap

According to, there are a few things to watch out for if you use castile soap around your home or on yourself:

  • If the water you use is hard, it will react with castile soap, leaving behind a white film residue. You can try softening the water.
  • You can also get a residue film if you combine it with vinegar or lemon juice. Combining it with these two ingredients will change the soap back to its original oils because one is alkali and the other is acidic.
  • Castile soap can strip away some of the color in your hair if you treat your hair with dyes.

With these few cautions aside, castile soap can be a big boost for your eco-friendly household and personal care routines.

There are so many excellent ways to use castile soap and know that you’re helping to protect the environment in the process.

4 thoughts on “What Is Castile Soap Used For?”

  1. Hi there Stella, 

    Your simple yet informative guide on castile soap is awesome.

    I am a huge fan of DIY and most often I have heard about this ingredient whenever I have looked up interesting things I want to make.

    It has happened a lot of time today that I had to go look this soap up and I couldn’t be more grateful for getting your website.

    I am going to share this with a couple of friends who are also into DIY. 

    I am sure they are going to love this.

    Keep up the good work here.

    1. Yes, DIY can be a great way to be eco-friendly and castile soap is an excellent base ingredient for many environmentally-friendly health, beauty, and cleaning recipes.

  2. A friend was recently telling me about Surfactants. She explained to me that Castile Soap and Sal Suds are some of them. I was impressed hearing the facts about how they remove germs and bacteria, as well as dirt and grease. Again, they don’t kill. They remove all manner of dirt and germs and grease of any surface. We’re used to soap and other surfactants that with their antibacterial agents, kill germs but do not remove them.

    1. Yes, how the various ingredients in either homemade or storebought cleaning and personal care products work together is influenced by many factors.

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