Rosemary and Eucalyptus Soap Recipe

Natural herbal rosemary and eucalyptus soap recipe. 


The star of this herbal soap recipe is eucalyptus. Eucalyptus essential oil, Eucaliptus globulus, is the one whose scent we associate with eucalyptus, and it’s mostly used as a fragrance for soaps and detergents. It is also used in the pharma industry, by isolating the substance called eucaliptol, the eucalyptus main active substance. Who doesn’t remember “Vick VapoRub”? Eucaliptol has bronchial-dilator properties, acting as a strong anti-septic and opening airways.


Eucalyptus by itself is an excelent plant for a refreshing soap, but having rosemary in my courtyard, and knowing that it also has very good medicinais properties I couldn’t help but to use it as well.

Rosemary (Rosmarinus officinalis) is an aromatic herb vety common in the Mediterranic regions. It was called rosmarinus by the ancient romans due to its special scent, which means in latim “sea dew”. It is very appreciated as a food condiment. It has desinfecting and aromatic properties, it’s a muscular relaxant, a memory activator and helps to strenghten the heart muscles. Rosemary is also scientifically known to reduce and prevent hair problems, namely, hair loss.

Thus, both plants contribute with very pleasant herbal camphor aromas, and very useful medicinal characteristics, some of which may even alleviate some symptoms of COVID-19 disease. Above all, here is a recipe for a very refreshing and invigorating soap. Try it at home!

Reference: “

Fragrance, dyes and dried herbs

About the dyes used: the purpose of this recipe is to use the characteristic yellow color that the olive oil prints in the soaps, taking into account that this recipe contains more than 50% olive oil, and mix it with a little ultramarine blue, obtaining a greyish-green color like eucalyptus leaves.

The experience I had with this soap was that over time, the yellowish color of the oil disappeared and the soap became a beautiful bluish tone (see cover photo). Nature turns out to be like this: unpredictable 🙂

If you want to make sure that the soap remains green, add a little green chromium oxide.

About essential oils used: of course, the recipe uses essential oil of eucalyptus (eucaliptus globulus), and rosemary (rosmarinus officinalis). I still use a little peppermint essential oil to give it an even stronger, minty aroma.

This recipe also uses the application of herbs. As mentioned in Part 1 – How to Make Soap From Scratch (see part of “Herbs and Flowers”) the herbs in soap should be added dry and ground. I ground mine with a coffee grinder practically until it was “powdered”, and that’s what I did in this recipe. You can see the decorative effect he created in the soap: black dots with a small brown / golden aura.

  • Weight: 450g
  • Soap bars: 6
  • Prep Time: 30 mins
  • Cooking Time: 40 mins
  • Curing Time: 4 a 6 semanas
  • Dificulty: Easy
  • Superfat 6%; Lye Concentration: 35,6%


Lye Water 

  • 113 g distilled water (low mineral content)
  • 63 g lye (100% NaOH)


Add After Trace

Reccommended Molds


  1. Wear goggles and gloves! Look at “Safety Recommendations” in Part 1 – How to Make Soap From Scratch
  2. Follow the post Part 2 – How To Make Soap by Cold Process Step-by-Step and the additional steps listed below. Don’t start the recipe without having everything ready!
  3. Measure the oil and remove a tablespoon of the measured oil into a small bowl. Mix the dyes with the oil and put aside, next to the ingredients after tracing.
  4. Make the lye water according to Part 2 – How To Make Soap by Cold Process Step-by-Step. Stir the mixture until the vapors start to dissipate.
  5. Heat the oils until the solid oils are completely melted (it is not necessary to heat all the time). Add the olive oil with dyes to the oils.
  6. Use as a target temperature 38ºC for the oil-solution mixture. If necessary, you can reheat the oils, but not the lye solution.
  7. Add the extract and essential oil (s) after tracing and stir with just a spoon.
  8. Add the dried herbs and stir well with a spoon.
  9. Pour the dough into the molds for 24 to 48 hours, always keeping an eye on the hardness of the soap. When they are firm (there is no dough to stick to the mold), unmold and let it cure for 4 to 6 weeks.
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