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10 Clever Uses for Castile Soap

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Castile soap is natural, inexpensive, and oh-so-versatile. Here are 10 clever uses for castile soap–from body care, cleaning, and pet care to ant repellent (yes, really!).

bars of castile soap on plate

Castile soap is a must-have ingredient when you start making and using natural cleaners. It’s made from natural vegetable oils and lye (as opposed to other soaps traditionally made with animal fat, like tallow).

The name comes from the Castile region in Spain, which is famous for its olive oil soaps. Today, castile soap is made from olive oil and a variety of other oils.

You can get castile soap in a bar or liquid form, and I use both types. I like Kirk’s Castile bar soap for handwashing and showers, and use unscented liquid castile soap for most DIY recipes.

liquid castile soap in bowl with bottle

Why You Should Never Use Vinegar with Castile Soap

Both vinegar and castile soap are popular natural cleaning ingredients, so it’s not too surprising that they sometimes end up in the same recipe. But this is a big mistake!

Vinegar is acidic and castile soap is naturally alkaline. When these ingredients are mixed together, they basically cancel each other out. That means your castile soap will un-saponify and no longer function as a soap. You’ll just be left with chunky curds like this.

castile soap curdling when mixed with vinegar

Want more tested and trusted natural cleaning recipes? You deserve to have a clean house without sacrificing your health. Check out Natural Cleaning for Your Entire Home and start cleaning safely!

fresh flowers in a clean farmhouse kitchen

Always Dilute Your Castile Soap

Castile soap is naturally concentrated and should be diluted before using. This is one of the reasons that it’s such an economical staple. A little bit goes a long way!

glass bowl with golden liquid and dark bottle

10 Castile Soap Uses You Need to Try

Ready to learn a ton of new uses for castile soap? Here are some of my favorites:

#1 – DIY Foaming Soap

My DIY foaming soap recipe is all-natural and very simple to make. I like to customize the scent with essential oils–lemon and rosemary is my favorite.

woman dispensing castile hand soap from green ceramic container

#2 – Quick All-Purpose Cleaner

Add one tablespoon of liquid castile soap to one cup of warm water to make a quick general-purpose cleaner. Add 5 drops of tea tree essential oil for some extra cleaning power.

#3 – Ant Repellent

That all-purpose cleaner you just made? It can be used as an ant repellent too! Simply spray into corners and crevices where ants tend to travel. Let it dry and it will keep ants at bay.

blue spray bottle in front of rock wall

#4 – Castile Honey Face Wash

To make an all-natural face wash that is gentle on your skin, combine these ingredients in a pump or squeeze bottle:

#5 – All-Natural Dog Shampoo

Mix one part castile soap to three parts water to use as a shampoo for your furry friend. Massage into their coat and rinse well.

happy dog being washed with castile soap shampoo

#6 – Homemade Soft Scrub

Use castile soap, lemon peel powder, and a few other ingredients to make natural Soft Scrub cleanser. Use this scrub to scour your sink, shower…anything that needs a gentle scrub.

#7 – Fruit and Vegetable Wash

Add one teaspoon of castile soap per gallon of warm water in the sink. Add produce and soak for 1-2 minutes, then swish gently to loosen dirt and debris. Rinse with cool water and your produce is all clean!

colorful vegetables being washed in the sink

#8 – Deep Clean Body Wash

For a deep clean, mix the following in a pump bottle to make a refreshing, natural body wash:

#9 – Makeup Brush Cleaner

Along with makeup, bacteria and other gunk can build up in makeup brushes–and you often don’t realize how dirty they are until you’ve cleaned them.

Make a natural brush cleaner by mixing 1/3 cup witch hazel, 1/3 cup water, and 1 teaspoon of liquid castile soap in a shallow bowl. Swish your brushes in the cleaner, let sit for 1-2 minutes, and then rinse clean with warm water.

makeup brushes with bowl of castile soap cleaner

#10 – Makeup Remover Wipes

Need makeup wipes without all the chemicals? Make your own! Mix the following ingredients in 4-ounce jar:

Shake the jar gently to mix, then add 15 cotton or fabric makeup remover pads to the jar. Press them down in the jar and shake gently to help them absorb the mixture. Use as needed to remove makeup.

cloth makeup wipes

What castile soap uses have you tried?

Have you tried any of these uses for castile soap? Which is your favorite? Share in the comments below!

Pin it, don’t forget it!

happy dog getting washed

vegetables soaking in sink full of water

spray bottle in front of stone wall

Hi, I’m Pam! I created Brown Thumb Mama to share my natural living journey, and help you live a greener life. Thanks for being here, and please check out the resources in my Natural Living Shop!

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1 thought on -10 Clever Uses for Castile Soap-;

  1. very useful information thank you
    i have been trying to be vegan since the lockdown now and was wondering how and what i can plant this coming season. i know the simple things like tomatoes and onions and courgettes etc but they are always half eaten by the time it is time for me to pick them.
    apart from the above solution, is there anything else i can do until i buy the soap you suggested.
    thank you

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