How to Make Black Soap

Co-authored by Shelley Williams

Last Updated: September 7, 2022 Approved

Black soap is a lye-free soap that's made from potash. It has been used for centuries throughout West Africa to gently cleanse and exfoliate skin. It may also help alleviate various skin conditions, such as eczema, for some people. You can use it on your body, face, hands, and hair. It's suitable for both dry and oily skin types. ^{[1]
X
Research source}

Ingredients

Potash Base

1 2.5 to 3-ounce (94.71 to 113.65 g) bag of organic potash
2 ¹ ⁄ ₂ cups (590 mL) of warm, distilled water

Soap

1.8 ounces (68.19 g) of prepared potash base
³ ⁄ ₄ cup (180 mL) of distilled water
4 ounces (120 mL) of castor oil
4 ounces (120 mL) of coconut oil

Part 1

Part 1 of 3:

Preparing the Potash Base

Download Article

1
Purchase organic potash from an online supplier. You may also be able to find it in a store that specializes in African grocery, but those may be difficult to find. It’s typically sold in 2.5 to 3-ounce (94.71 to 113.65-g) bags. Make sure that it’s food grade or labeled for soap-making. ^{[2]
X
Research source}
- Potash is ash that comes from different sources, such as cocoa, plantain, and clay. Any of these will work for black soap, but they may affect the final color and texture. ^{[3]
  X
  Research source}
- You can buy potash online from stores that specialize in soap making supplies or African grocery.
2
Combine your potash and warm water in a stainless steel pot. Pour 2.5 to 3 ounces (94.71 to 113.65) of potash into a medium-sized stainless steel pot. Stir in 2 ¹ ⁄ ₂ cups (590 mL) of warm, distilled water. ^{[4]
X
Research source}
- Potash isn't as harsh as lye, but it can still affect your skin. Put on plastic, rubber, or vinyl gloves, and don't take them off until after you've finished making the soap.
- Don't use tap or filtered water. They may contain minerals, which might affect the soap in the end.
- If you can’t find a stainless steel pot, then an iron pot will work just fine. Don't use aluminum as it will react with the potash.
Advertisement
3
Bring the water to a boil over high heat. Keep an eye on the water as it comes to a boil. Once the potash starts to heat up, it may start to bubble and boil over. This should only take a couple of minutes, but be patient. ^{[5]
X
Research source}
- You need to bring the potash to a boil because it helps jump-start the saponification process.
4
Reduce the heat to medium and cook for 30 minutes, stirring often. The potash is ready when it starts to harden and take on a crumbly texture, like ground meat. This will typically happen after about 30 minutes. As the potash cooks, be sure to scrape the bottom and sides of the pot often with a rubber spatula.
- The potash will absorb the water and turn solid. You can help it cook faster by flattening it across the bottom of the pot with your spatula.
- Watch out for bubbles; don’t let the potash boil over. If it starts to happen, lift the pot off the stove for a moment or two until the bubbles die down.
5
Remove the potash from heat once it starts to look crumbly. If the potash doesn’t look like ground meat just yet, let it cook for a few more minutes. Once it turns crumbly, turn the stove off and set the pot aside. The potash needs to cool down a little before you can use it. ^{[6]
X
Research source}
- You can take the potash out of the pot and transfer it into a jar.
- The pot will look sticky, gummy, and caked over. A bit of water will clean it right up, however.

Part 2

Part 2 of 3:

Making the Soap

Download Article

1
Heat the castor oil and coconut oil over low heat in a deep pot. Pour 4 ounces (120 mL) of castor oil and 4 ounces (120 mL) of coconut oil into a deep pot. Set the pot on the stove and turn the heat on to “low.” Cook the oils, stirring often, until the coconut oil melts and combines with the castor oil. ^{[7]
X
Research source}
- Make sure that the pot is deep, like what you’d use for pasta. This will ensure that the soap won’t boil over when you make it.
- Like with the pot you used for preparing the potash, make sure that you won’t use this one again for cooking.
- If you don’t have castor oil, try palm oil instead.
2
Mix 1.8 ounces (68.19 g) of potash and ³ ⁄ ₄ cup (180 mL) of warm water. Use a kitchen scale to measure out 1.8 ounces (68.19 g) of your prepared potash. Place the potash into a bowl, then pour ³ ⁄ ₄ cup (180 mL) of warm water over it. Let the potash sit for a few minutes until it dissolves. ^{[8]
X
Research source}
- Use distilled water for best results.
- How long it takes for the potash to dissolve will vary each time. Expect it to take anywhere from 5 to 10 minutes.
- Store the rest of the potash in an airtight container. This is important, otherwise the potash will absorb moisture from the air and turn corrosive. ^{[9]
  X
  Research source}
Use you rubber spatula to scrape the bottom and sides of the bowl clean so that you don’t waste any potash. Give the mixture a stir to combine everything. ^{[10]
X
Research source}
4
Cook the soap over high heat, stirring often, until it thickens. This process will produce a lot of smoke, so it would be a good idea to open up a window and turn the fan above your stove on. If you have a portable stove that you can bring outside, that would be even better. ^{[11]
X
Research source}
- Don’t wait; once the potash starts to thicken, move onto the next step.
This completes the soap-making process. ^{[12]
X
Research source} At this point, you can stir dyes or essential oils into your soap, although this is not typical for black soap. Most people leave black soap in its purest form, without any additions.

Part 3

Part 3 of 3:

Finishing and Using the Soap

Download Article

1
Pour the soap into soap-making molds. The best mold to use for this type of soap is the long, rectangular soap-making mold. You will need to cut the soap into bars after it finishing curing. You may be able to use smaller plastic or silicone molds too, however.
- Use a rubber spatula to scrape the soap from the sides of the pot so that you don’t waste anything.
- Alternatively, leave the soap in the pot. This way, you can pull it apart into smaller tufts later.
2
Wait 24 to 48 hours before you demold and slice the soap. Take the soap making mold apart, then transfer the soap to a flat surface. Use a smooth (non-serrated) knife to cut the soap into 1 to 1 ¹ ⁄ ₂ in (2.5 to 3.8 cm) thick bars.
- If you used individual soap molds, you don't need to take them apart and slice the soap. Just turn the soap out onto a flat surface, like taking a cake out of a pan.
- If you left the soap in the pot, pull it apart into marble-sized tufts. This will give you single-use portions that are perfect for washing your face and hands. ^{[13]
  X
  Research source}
3
Allow the bars to finish curing for 2 weeks on a wire rack. This is very important. Much like lye-based soap, black soap needs to cure and harden as well. Keep in mind, however, that black soap will never be quite as hard as regular soap. ^{[14]
X
Research source}
- After 1 week, turn the bars over so. This will ensure that they cure evenly.
4
Store the soap in a sealed container when you aren't using it. Wrap extra bars in plastic wrap or keep in them plastic, zippered bags. If you made individual "portions" of black soap, then you can keep those in a jar or zippered bag. ^{[15]
X
Research source}
- If you wish to keep the soap in a soap dish, make sure that it has slots so that the excess water can drain out.
- Keeping black soap away from moisture is important. If it gets wet, it will start to dissolve again.
- Black soap can develop a white film over time. This is normal and doesn’t harm or change the soap’s ability to function.
5
Work the soap into a lather before you use it on your skin. Black soap is very grainy. If you use it directly on your skin, it may irritate it. Instead, work the soap into a lather, then use the lather to cleanse your skin. ^{[16]
X
Research source}
- If you're used a tuft of black soap, roll it into a ball first so that it doesn't have any sharp edges.
- Black soap may cause a tingling, burning sensation, which is normal. If you develop a rash, however, stop using the soap and consult a dermatologist.

Expert Q&A

Search

Add New Question

Question

What other materials can I use to make the soap black?

Shelley Williams
Arts & Crafts Expert
Shelley Williams is an Arts & Crafts Expert based in Long Beach, California. After a 20-year career as an educator, Shelley brought her love of education to the world of crafting and creating things. Shelley opened CRAFT + LIGHT, a creative arts studio, in 2019. Since then, Shelley has taught over 1000 people to make soap, wood signs, alcohol inks, candlemaking, bath bombs, and more. In addition to being a craft store, CRAFT + LIGHT hosts private parties, family birthday events, open studio events, and other types of craft demonstrations. Shelley partners with city governments to curate creative care packages for at-risk residents and is a partner of the Long Beach Black Health Collaborative funded out of the City of Long Beach.

Shelley Williams

Arts & Crafts Expert

Expert Answer

To enhance the color of your soap, consider using charcoal as an exfoliator for your skin. Charcoal not only provides color but also offers excellent exfoliating properties. Alternatively, you can opt for mica powder, a safe and natural black pigment. Adding mica powder to your soap recipe will effectively darken its color while maintaining its safety and natural appeal.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 2 Helpful 3
Question

Are there any other ways to pack homemade soap?

Shelley Williams
Arts & Crafts Expert
Shelley Williams is an Arts & Crafts Expert based in Long Beach, California. After a 20-year career as an educator, Shelley brought her love of education to the world of crafting and creating things. Shelley opened CRAFT + LIGHT, a creative arts studio, in 2019. Since then, Shelley has taught over 1000 people to make soap, wood signs, alcohol inks, candlemaking, bath bombs, and more. In addition to being a craft store, CRAFT + LIGHT hosts private parties, family birthday events, open studio events, and other types of craft demonstrations. Shelley partners with city governments to curate creative care packages for at-risk residents and is a partner of the Long Beach Black Health Collaborative funded out of the City of Long Beach.

Shelley Williams

Arts & Crafts Expert

Expert Answer

To pack homemade soap, place it in a nice little satchel bag. Mesh bags are ideal for this purpose because they are aesthetically pleasing and make great gifts that people will enjoy. Unlike plastic, which can manipulate the texture of the soap by removing waxes, mesh bags preserve the soap's texture when packed.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 2 Helpful 0
Question

What's a double boiler? Is there anything I can use in place of a double boiler?

Community Answer

Put a pan or pot on your gas cooker or stove. Put a little water in it, then rest another pan inside the first one so that it doesn't touch the water. This is your double boiler. Pour your base oil into the second pan/pot.

Thanks! We're glad this was helpful.
Thank you for your feedback.
If wikiHow has helped you, please consider a small contribution to support us in helping more readers like you. We’re committed to providing the world with free how-to resources, and even $1 helps us in our mission. Support wikiHow
Yes No

Not Helpful 7 Helpful 53

See more answers

Ask a Question

200 characters left

Include your email address to get a message when this question is answered.

Submit

Tips

Black soap does not expire or decay over time.

Thanks
Helpful 2 Not Helpful 1
Potash is simply ash that comes from different sources. This means that if you can’t find one type of potash, you can still use another type.

Thanks
Helpful 3 Not Helpful 0
Different types of potash will have different colors, resulting in soap that ranges from light tan to dark brown.

Thanks
Helpful 2 Not Helpful 2

Submit a Tip

All tip submissions are carefully reviewed before being published

Name

Please provide your name and last initial

Submit

Thanks for submitting a tip for review!

Warnings

Do not use aluminum pots or supplies while making the soap, as it will react with the potash.

Thanks
Helpful 4 Not Helpful 0
Don’t use plantain-based potash, palm oil, or coconut oil if you have latex-based allergies. Try a different oil, such as castor and olive. ^{[17]
X
Research source}

Thanks
Helpful 1 Not Helpful 0
Do not use cocoa pod-based potash if you are allergic to chocolate/cocoa or caffeine. ^{[18]
X
Research source}

Thanks
Helpful 0 Not Helpful 0
Stop using the soap and call a dermatologist if you get a rash or dermatitis. ^{[19]
X
Research source}

Thanks
Helpful 0 Not Helpful 0

Things You'll Need

Small, stainless steel or iron pot
Deep stainless steel pot
Mixing bowl
Stirring implement
Rubber spatula
Kitchen scale
Soap molds (optional)
Glass jar
Plastic gloves

You Might Also Like

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

[17]

[18]

[19]

Log in

How to Make Black Soap

Ingredients

Steps

Preparing the Potash Base

Making the Soap

Finishing and Using the Soap

Expert Q&A

Tips

Warnings

Things You'll Need

You Might Also Like

References

About This Article

Reader Success Stories

Did this article help you?

Quizzes

You Might Also Like

Featured Articles

Trending Articles

Featured Articles

Featured Articles

Watch Articles

Trending Articles

Quizzes

Explore Categories