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You are here:Home > Soap Making > Natural Liquid Soap Making > Natural Liquid Soap Recipes > Foaming Facial Cleanser Recipe
 Foaming Facial Cleanser Recipe
Makes four 8 oz. bottles

This foaming facial cleanser recipe uses a liquid castile (olive oil) soap base, which is renowned for its light lathering, gentle cleansing, and moisturizing properties. Making this recipe is a three-part process, where you first make a castile soap paste, then dilute it into a liquid soap base, then you'll add nourishing proteins, vitamins, and soothing aloe vera to make it a perfect skin care soap.

If you've already pre-made some castile soap paste, skip to Part 2. Alternatively, you can start with our pure castile liquid soap, and skip to Part 3.

Part 1: Make a castile soap paste

Olive Oil1400 grams49 ounces
Potassium Hydroxide280 grams10 ounces
Soft or Distilled Water850 grams30 ounces

Total actives (excluding water)1680 grams59 ounces

When making your liquid soap recipe, pay special attention to:
  • Adequate mixing of the soap oils and potassium hydroxide
  • Cooking of the soap mixture for sufficient time after trace

1. Prepare utensils, double boiler, and mixing tools.

2. Measure out and begin heating oils to 160 degrees.

3. Measure out potassium hydroxide.

4. Measure out soft or purified water.

5. Slowly add potassium hydroxide to water to create base solution. This solution will be approximately 150 degrees after mixing. Allow to cool to 140 degrees.

6. Remove oils from heat or turn off burner. In a slow and steady stream, add the base solution to the 160 degree oils, stirring constantly with a whisk.

7. Continue stirring constantly (we recommend using a regular kitchen stick blender) until the soap mixture is quite thick and has the consistency of salt water taffy. The higher the coconut oil content, the stickier the mixture will be. Maintain a temperature of 160-170 degrees during the mixing process.

Mixing time can range from as little as 5-10 minutes for a coconut oil soap, to two hours for a castile liquid soap.

Mixing time can be shortened by using existing soap base as a starter. Use 3 to 4 ounces of soap base per batch. Add to the oil/base mixture and fully mix and dissolve it in.

8. When the soap has thickened and has the consistency of taffy, place the soap pot in the double boiler and "cook" the mixture in gently boiling water. After 5 to 10 minutes of cooking, check for separation by stirring the mixture and looking for a watery liquid on the bottom of the pot. Stir well and continue cooking for another 10 minutes. Check again for separation and stir well.

9. Continue cooking the mixture for a minimum three hour period. During this time, you will note that the mixture will become translucent. After three hours turn off the heat and let the paste stand in the double boiler overnight if possible.

10. After a three hour cooking period, you can test your soap mixture by dissolving 30 grams (one ounce) of the soap paste into 60 grams (two ounces) of soft or distilled water. When the sample is cooled it should remain clear. If your cooled sample has a milky appearance, it means that it still contains free fatty acids, in which case, you'll need to return the mixture to heat and resume cooking for 30 to 60 minutes. Test again, and repeat as required until your cooled sample is clear.

11. The completed soap paste can be used immediately or can be stored in a sealed plastic bag for an extended period of time, to be used as and when required.

Part 2: Dilute your castile paste

Dilute your castile soap paste to 20% actives, using 3 parts water to 1 part paste. For the recipe below, use 300 grams of water to 100 grams of castile paste.

1. Crumble the paste into hot water, stirring gently with a spoon or whisk until all of the paste is fully dissolved.

Part 3: Customize your castile liquid soap

This is the part where you turn your liquid castile soap into the perfect gentle foaming facial cleanser.

1. In a bowl, measure out:
2. Add and stir gently to combine:
570 grams Warm Water

3. Add and stir gently to combine:

4. Stir in 5 grams Suttocide A Preservative.
Suttocide A is derived from glycine, which is a naturally occurring amino acid, and suitable for natural liquid soap and other alkaline products that have a higher pH, up to 12.
INCI: Sodium hydroxymethylglycinate

5. Mix together gently in a measuring cup until fully combined.

6. Pour into
bottles with foaming pumps.