Pink Grapefruit And Lavender Handmade Cold Process Soap Recipe

Pink Grapefruit Soap Recipe

I make all of my own soap because it is fun to do, makes thoughtful gifts, and is really great for my skin. One of my very favourite blends is this pink grapefruit and lavender soap that I made using this process.

pink grapefruit and lavender handmade cold process soap recipe


I love to get new recipes and today we are graced with the expertise of a wonderful soap maker, Heidi Corley Barto, author of  The Natural Soap Chef: Making Luxurious Delights from Cucumber Melon and Almond Cookie to Chai Tea and Espresso Forte. Heidi’s recipe for Pink Grapefruit soap is sure to put a spring in your step, just when you need it most, your morning shower!

Pink Grapefruit Soap Recipe

Pink Grapefruit Soap Recipe

This bar has a great scent to wake you up! Paprika gives the soap a pinkish orange color, but it’s up to you whether you want to go through the extra step of making the paprika-infused oil ahead of time. Without the paprika, the bar will be white. Just use regular olive oil if you decide to leave the bar uncolored—it will still smell awesome.

Basic Olive Oil Soap Recipe

Mix temp 115°F



Lye mixture

Add at trace

  • 34 grams pink grapefruit fragrance oil

1. Measure your fragrance into a small glass container and set aside. Measure the oils into a plastic container. Place the container in a larger pot and pour in enough hot tap water that the container begins to float. Set the pot on the stove and turn the heat to warm. Insert a thermometer into the oil.

2. Goggles and gloves on!

3. Measure the distilled water into a heat-safe glass container. Measure the lye crystals into a separate small glass container. Slowly add the lye crystals to the water, stirring with your spatula as you do so. Do not inhale above this container—there will be fumes that can take your breath away. This mixture will heat up quickly. Insert a thermometer into the lye mixture.

4. Monitor the temperatures of the two containers. You want both to reach 115°F. As needed, refresh the hot water bath or turn the stove burner higher to raise the temperature, or use a cold water or ice bath to bring the temperature down.

5. When both the oils and the lye mixture are at 115°F, pour the lye mixture into the plastic container with the oils. Blend with your stick blender until the mixture reaches a light trace stage. Add your fragrance. Blend until the mixture reaches medium trace (see page 26).

6. Pour into your chilled mold. For the top shown in the photograph, tear off small pieces of fresh grapefruit peel, trim away any excess pith (white part), and lightly place shiny side down to cover the loaf top. Lightly cover with plastic and refrigerate overnight.

7. Remove from the refrigerator and let sit at room temperature.

8. Unmold 24 hours after pouring into your mold, cut into bars, spritz with isopropyl alcohol, and place in your curing area.

Paprika-infused olive oil: In a heat-safe glass container, combine 2 teaspoons of paprika with 125 grams of olive oil. Set this container in a larger container, pour in just enough hot tap water that the inner container starts to float, and cover. Leave overnight, then strain through a coffee filter. The oil will be a bright orange, but the end result in your bar of soap will be a pinkish orange.

Check out more great soap recipes in Heidi’s book, The Natural Soap Chef.



About the Author : Stephanie RoseAn artistic gardener aiming to feed the body & soul through an urban potager garden & a community veggie plot in Vancouver.View all posts by Stephanie Rose

  1. Kat White
    Kat WhiteAugust 16,13

    I think you did it with this one. This is the recipe that will push me to try making soap with lye. It’s going on my winter craft list.

  2. Barbara
    BarbaraJanuary 24,14

    If only I had enough confidence to make these wonderfol items. Sounds fun and I’d be so proud i’dI’d done it. Maybe one day iI will.

  3. Ricardo Otranto
    Ricardo OtrantoFebruary 18,14

    I’m new in the cold process and have found your website amazing, with plenty of recipes and new gr8 ideias. I’ll share it in my blog. And please feel free to visit my online store of Soaps from Brazil

  4. Elvis
    ElvisFebruary 22,14

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  6. Peg Fiechter
    Peg FiechterMay 24,14

    I’m a candlemaker interested in making soap. What are your thoughts on essential oils versus fragrance oils. Thanks! Peg

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  9. Jenn
    JennNovember 20,14

    Hi: I love your sit here. Great information and “all”. I would like to ask you though, where to find the juicy pink grapefruit F.O. you used in that soap. I had one that was incredibly wonderful but the tag is long gone now. Would you mind sharing where to find this apparently “good” one with me ? Your soap turned out beautiful by the way. I was really impressed and hope I can make one as nice as yours are.
    Thank you,
    Jenn in Oregon

    • Stephanie
      StephanieNovember 21,14

      Jenn, I never use fragrance oil. This recipe was submitted by a guest blogger, the author of the soap book and I didn’t want to change it. Even though it’s not 100% my soap-making style, it’s a really great recipe and it’s easy to swap out FO for natural scents. I, personally, always use pure essential oils for all of my soap recipes and grapefruit is a wonderful natural scent! The first photo is of my soap made with grapefruit and lavender essential oils and natural colours (tumeric and rottanjot). I love grapefruit and lavender together, but if you prefer a sweet citrus aroma only, then add a few drops of sweet orange essential oil to the grapefruit e.o. and you will be in heaven!!

  10. Hannah
    HannahDecember 23,14

    So I just finished making this soap on Sunday. A few thing seemed a little off about it when I made the soap. First my oils heated up hotter than I wanted and then I had to add the lye before they got to the same temp because my lye was cooling down too fast. Then it came to trace almost instantly. After 24 hours the bar was extra firm so I went ahead and cut it and it broke apart almost like caulk. Do you now what may have caused this? I put this recipe into a lye calculater and the amount it calls for is a little high. Also 38 grams of fragrance oil I’m assuming was a typo because that would be half a cups of fragrance so I did not add that much. Could the high amounts of lye do this or is it more likely that not having my temp right was to blame? How would you rebatch it?

  11. Hannah
    HannahDecember 30,14

    Also I meant to say it broke apart like chalk not caulk. Is so brittle I don’t know where to begin. Also a white powder is covering the bars now too

  12. brianna
    briannaJanuary 4,15

    Hi- I have made cold process do so before and see the pink grapefruit measurements, but where and how are you adding the lavender layer in? I am looking to expand my repertoire! Thanks!!

  13. Lauren
    LaurenFebruary 4,15

    Hi there! I would like to try this recipe but for it to look like the photo on the page. Can you please tell me how that was created?

  14. Stephanie
    StephanieFebruary 5,15

    Hi Lauren, which photo are you referring to? The first photo is my lavender grapefruit soap that I made using the cold process method here (this is mentioned just before the photo).

    The grapefruit is coloured with turmeric and scented with grapefruit essential oil. The lavender is coloured with rottanjot and scented with lavender essential oil. I colored and scented both in separate bowls then poured them into the same milk carton (one on top of the other) then I cut the soap as I described in the post that I linked to.

    The second and third photos are from the recipe on this page.

    I hope that helps!

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  16. Debora Cadene
    Debora CadeneOctober 4,15

    Hi there. I think I can almost smell this soap. I was wondering if you wouldn’t mind telling me how many drops each of the grapefruit and lavender Pure Essential Oils you used vs the fragrance oil. Thank you so much and you have a wonderful day!!!

    Debora Cadene

  17. lindsey marie
    lindsey marieApril 10,16

    I am just wondering how many bars one recipe makes?

  18. Soap World
    Soap WorldAugust 20,16

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  19. Nora
    NoraOctober 21,16

    Nice idea – a natural way to color the soap. What else can we use besides paprika? What can we use for a purple or pink color? Thanks in advance!

    • Stephanie Rose
      Stephanie RoseOctober 21,16

      Hi Nora, you can use madder root for pink and rattanjot for purple. :)

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  21. Adrianne
    AdrianneSeptember 29,17

    I don’t like to use Palm Oil. What’s a good substitute please?

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