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22 Highly Useful Things You Can Do With Castile Soap

There's a good reason why I always keep a bottle of castile soap under my sink. (Actually, there are 22 good reasons!)

Castile soap used to be tricky to find, but today you can find it in nearly every health food store, and even in some regular grocery stores too! This naturally-derived soap is here to stay, and it’s no wonder why! There are just so many different ways to use it, from head-to-toe body care to every day household cleaning, laundry, and pet care. And we’re going to explore Castile soap uses in today’s post!

But before we get to that, I thought we’d talk a little bit about what Castile soap is, where it comes from, and why it’s such a popular product!

What Is Castile Soap?

All soaps are made with fats, but Castile soap is unique in that it is made from vegetable oils rather than animal fats. This style of soap making originated in the Castile region of Spain (hence the name, which I often see misspelled as “Castille!”) where it was made from pure, local olive oil. Although olive oil is the traditional base for this soap, it can be made with coconut, hemp, avocado, almond, walnut, and many other vegetable oils.

This soap is typically concentrated, completely biodegradable, and cleans gently, yet effectively. It can be used in a dizzying number of different ways, and today I’ll be sharing a few of my favorites with you! 🙂

22 Genius Uses For Castile Soap

1. Natural Body Wash

Castile soap on its own makes a great body wash, but adding a bit of moisturizing honey and some skin-nourishing oils can take it to the next level! Get the recipe for my natural 4-ingredient Castile soap body wash here.

2. All-Purpose Cleaning Spray

You can use Castile soap to make a great all-purpose cleaning spray that’s great for cleaning up everyday messes. Just add 1/4 cup of soap to 1 quart of warm water, then stir to combine. Pour the solution into a spray bottle to use.

Feel free to add a few drops of lemon oil or tea tree oil to the spray for added cleaning power. Or you could use Dr. Bronner’s Tea Tree Castile Liquid Soap, which already includes tea tree oil as an ingredient!

3. Reusable Cleaning Wipes

Those store-bought antibacterial cleaning wipes are certainly convenient for wiping down countertops and other surfaces, but they’re also expensive and create unnecessary waste! But with a little Castile soap, you can make your very own kitchen cleaning wipes that are totally reusable!

4. Fruit & Veggie Wash

Use Castile soap to make a cleansing solution for washing fresh produce. Fill your sink or a large bowl with water, then add 1/4 teaspoon of Castile soap. Dunk your produce into the water and swish it around to knock any dirt or debris loose. Then rinse your produce under clean, cool water and it’ll be ready to eat!

5. Foaming Hand Wash

Use Castile soap to make a great natural foaming hand soap at home! Just stir together Castile soap, a bit of coconut oil, and some germ-fighting essential oils, and pour it into a foaming soap bottle. My favorite thing about this soap is that it not only leaves your hands feeling, but moisturized too!

6. Deter Ants

Use Castile soap to make a spray that will help deter ants. Add 1/4 cup of tea tree Castile soap to 1 quart of warm water, and stir to mix. (If you don’t have any on hand, you can use plain Castile soap and add 6-8 drops of tea tree essential oil for the same effect.)

Pour the mixture into a spray bottle, then spray it onto areas where you’ve spotted ants hanging around. (Keep this spray away from plants, as this solution could burn them.)

Here are some more ways to prevent and how to get rid of common ants, as well as how to get rid of sugar ants.

7. “Soft Scrub” Cleaner

Use Castile soap to make your own homemade “Soft Scrub” style abrasive cleaner. In addition to the cleansing soap, this formula also contains baking soda to help scrub away tough grime. And also check out this post on my favorite homemade cleaners.

8. Baby Soap

Castile soap is very gentle, making it a great option cleaning sensitive baby skin! Add 1 ounce of soap to 2 ounces of purified or distilled water. Add 3-5 drops of lavender essential oil, if desired. Use the solution to wash your baby as usual, making sure to keep the soap mixture away from your baby’s eyes!

9. Oil Soap Garden Spray

Insect issues, fungal infections, and other diseases can create real problems for home gardeners. But you can use Castile soap to make your own oil soap garden spray that acts as a natural insecticide and fungicide!

My daughter relies on this spray to keep powdery mildew at bay when it creeps into her garden late in the summer. Get the full recipe for my oil soap plant spray below!

Related: Make Your Own Organic Oil Soap Garden Spray

10. Shaving Cream

Rub a little bit of Castile soap between wet hands to create a luscious lather that’s perfect for shaving! The oils in the soap help the razor glide across your skin, reducing razor burn and nicks. Use it on your face, underarms, legs, or wherever!

11. Dog Shampoo

Because it’s so gentle, Castile soap makes a great dog shampoo! Just wet your dog’s coat and work a small amount of soap into it until you achieve a good lather. Continue shampooing, then rinse well. Your dog’s coat will look clean and shiny once it’s dry!

12. Hand-Washing Dishes

Fill your sink with 10 parts warm water and 1 part Castile soap. Use the wash solution to wash and rinse your dishes as usual. You can also use the same ratio to make a soapy solution to use in those handy refillable dish scrubbing brushes.

13. Honey Facial Cleanser

Castile soap is one of the ingredients in one of my favorite homemade beauty concoctions, my honey facial cleanser. Honey acts as a humectant, absorbing and retaining moisture in the skin, plus it contains skin-nourishing antioxidants! And the soap cleanses skin without stripping away natural oils. Get the recipe for my all-natural honey facial cleanser at the link below.

Related: How To Make Your Own Homemade Facial Cleanser

14. Window Cleaner

If your windows need a lot of help in the cleaning department, use Castile soap to help power through the grime. Add 1 tablespoon of soap to 1 quart of water, then pour the mixture into a spray bottle. Spray it liberally onto your windows, then use a sponge or scrubber to power through the grime. Follow with a rinse of club soda, or rinse with a mixture of 1 part water and 1 part vinegar.

15. Toilet Touch-Ups

Castile soap can help you keep your toilet looking clean in between bathroom cleanings. Just put a few drops of soap into your toilet, then give it a quick swish with your toilet brush, and flush.

16. Foot Scrub

Get silky smooth and sandal-ready feet by making this quick and easy scrub! Combine 1 cup of sugar, 1 tablespoon of Castile soap, 2 tablespoons of coconut oil, and 4 drops of peppermint essential oil. Use it to scrub away dry skin for softer feet!

17. Bedding Wash

Use this special wash method to kill and eliminate dust mites from your bedding. Add 1/3 cup of Castile soap to your washing machine along with your bedding. Pour 1/2 cup of vinegar into the fabric softener cup or dispenser, so it gets added during the rinse cycle.

Start a wash cycle on the hottest water setting, then once the cycle is done, dry your bedding on the hottest dry cycle. (Keep in mind that these instructions are for standard washing machines. Those with HE washers should use 2-3 tablespoons of soap and 1/4 cup of vinegar.)

18. Clear Sinus Congestion

Use a Castile soap with essential oils to help clear sinus congestion. Fill a large bowl with hot water, and add a squeeze of peppermint soap or eucalyptus soap. Then lean over the bowl, and drape a towel over your head to trap the steam inside. Breathe deeply, and you’ll feel your airways and nasal passages start to open up!

19. Mopping Solution

Add 1/2 cup of Castile soap to 3 gallons of hot water to make a simple and effective mopping solution. Dip your mop into your bucket, and mop your way to clean and shiny floors!

20. Makeup Brush Cleaner

Use Castile soap to make a gentle cleaning solution for your makeup brushes! Squirt a small amount of soap into a small bowl, then fill the rest of the bowl with warm water. Swish your makeup brushes around in the soapy water, then rinse the brushes with cool water until the water runs clear. Allow the brushes to air dry completely before using.

21. Makeup Remover

Make a simple makeup remover solution by mixing equal parts Castile soap, witch hazel, and a carrier oil of your choice. Use with a soft cloth or cotton pad to gently remove eye makeup.

Bonus Tip! – How To Turn A Bar Of Castile Soap Into Liquid Soap

Buying bars of Castile soap can often cheaper than buying the liquid kind. But you can actually turn bar soap into liquid soap quite easily!

Start by chopping up the bar of soap into tiny pieces, then place the soap pieces in a pint-size mason jar. Fill the jar with boiling water and let it sit for about 20 minutes. Then stir well to make sure the soap is completely dissolved. And that’s all there is to it! 🙂

What’s your favorite way to use Castile soap?

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    Hi, I’m Jillee!

    I believe we should all love the place we call home and the life we live there. Since 2011, I’ve been dedicated to making One Good Thing by Jillee a reliable and trustworthy resource for modern homemakers navigating the everyday challenges of running a household. Join me as I share homemaking and lifestyle solutions that make life easier so you can enjoy it more!

    Every day I share creative homemaking and lifestyle solutions that make your life easier and more enjoyable!

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