How to make Cold Process Charcoal Soap?

How to make Cold Process Charcoal Soap?

How to make Cold Process Charcoal Soap?

Midnight – Activated Charcoal Soap

cold process soap activated charcoal

Midnight Facial soap is actually Activated charcoal and Tea tree essential oil which is a very popular soap that is easy to make but is very useful and beneficial for the skin.

This soap is used mainly for person with oily skin and extreme acne. Many also use it to balance their skin tones especially when they have dark spots about their body.

The midnight soap can be used as a facial soap only or a full body soap, its that versatile.

The charcoal helps to remove excess oil from the skin by adsorption while the tea tree essential oil helps keep the skin tight.

This activated charcoal cold process soap recipe uses Olive, coconut, sweet almond and castor oil along with activated charcoal and tea tree oil. However to make it easy for you we have combined this recipe in its portions in our Ready Mix soap making oil


Cold process soap making is easier than many may think. It can be a bit nerve wrecking especially when it comes to handling lye. This corrosive chemical reacts with water and begins to heat up drastically.

It is good to make safety procedures standard and a habit when it comes to making cold process soap. Many soap makers have stated that after making soap for a while it becomes easier and less scary once they stick to safety protocols.


The one key point that is stressed as we teach and we will stress here on this article is the importance of safety in soap making.

You will be working with super heated materials with the potential to cause major skin burns. You must be sure that you are properly prepared. The main ingredient in soap making is sodium hydroxide also known as lye.

The usage of lye in soap making is absolutely needed and has been a subject of debate. How can a handmade soap be natural if a chemical is used?


Sodium hydroxide cold process soap

Sodium hydroxide is an inorganic compound used to emulsify the fats of oils into soap. When used properly in soap there will be no lye left over in the soap as its chemical makeup changes to create the actual soap.

When handling lye be sure to protect your exposed skin. Here are a few items we recommend you have.

  • Gloves
  • Long sleve shirt
  • Long pants
  • Closed toe shoes
  • Safety Goggles

These items will ensure if there are any accidents such as splashes you will keep your skin safe from the burning sensation of lye.


  • Use an appropriate container to hold your lye and to mix your lye water. Heat tempered glass works very well or hard plastic containers.
  • When making your lye water remember to add the LYE to the WATER and never the other way around.
  • Mix you lye solution in a well ventilated area. The fumes that will arise from mixing water and lye can become noxious to some persons while its chemical scent can burn your nose and make your eyes water.
  • Ensure that you are wearing your safety glasses, rubber gloves, long sleeve shirt and pants and close toe shoes. This is to avoid any splashes getting on your skin. Another reason is that if you use a container that cannot handle the heat created by the lye water solution it could break and the entire solution can get on your body.


oil for soap making

In some recopies and depending on where in the world you live you may have to pre heat your oils. Oils can also burn the skin when heated hence ensuring that you are safe from splashes or spills is very important.

A few options will be listed below.

This recipe uses Olive and Coconut Oil ONLY


  • 32 oz – Ready Mix Soap Making Oil
  • 10 oz – Distilled water (preferable)
  • 4.6 oz – lye (NaOH)
  • 1.4 oz – tea tree essential oil
  • 3 tsp – Activated Charcoal

Purchase Ingredients

Ready Mix Soap Making Oils

Tools Needed

  • 2 qt Glass Mixing Bowl
  • 16 oz glass measuring cups (TWO)
  • Silicone Spatula
  • Stick Blender
  • Infrared Thermometer
  • Steel Whisk (optional)
  • 1 tsp measuring spoon
  • 42 oz Loaf Mold
  • Food grade scale (ounces)


1 – Lye water

Add lye to water slowly mix until dissolved Add sodium Lactate to the lye water mix. Let cool to 80-100deg. (Can put in freezer to speed cooling)

2 – Oils

Add oils in large bowl and warm to a point where oils are clear. Keep below 120 deg, 100-110 is good.

3 – Essential Oils

Measure out essential oils in a glass container. (do not use plastic container) when measuring use wax paper to avoid the oil spilling on the plastic of the scale.

midnight activated charcoal soap

4-  Mixture

  • Add charcoal to oils and mix with stick blender until well blended
  • Add Tea Tree essential Oil to base oils and blend together
  • Add lye water to oils and charcoal mix along stick blender to prevent bubbles Add around 100 deg for oil and lye water
  • Trace will accelerate due to water discount and Essential Oil work quickly and blend to light trace.
  • Pour mixture into loaf mold design top as needed
  • Depending on ambient temperature Cover with cardboard or wax paper over top then put to bed with towels to go through trace. If in a room at 75deg or more leave open if in a cooler room cover.

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