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Goat Milk Soap Recipe

Yields: Fits a 2-lb soap mold (about 8–9 bars)

Equipment

  • Stainless steel or heavy-duty plastic bowls
  • Silicone spatulas
  • Thermometers
  • Stick blender
  • Molds: Search “2 lb silicone soap mold” on Amazon—these work well for beginners and clean up easily.

Ingredients
  

  • 12 oz Lard or Tallow
  • 12 oz Olive Oil
  • 8 oz Coconut Oil
  • 4.5 oz Sodium Hydroxide Lye
  • 9 oz Goat Milk frozen
  • Fragrance or Essential Oils are OPTIONAL: Add 1–1.5 oz of fragrance oil or essential oil/blend per batch, depending on desired strength. Always check the manufacturer’s recommended usage rate. CandleScience, Bramble Berry, and Nature’s Garden are reliable suppliers.

Instructions
 

  • Slowly sprinkle lye into the pre-frozen goat milk while stirring constantly to prevent scorching. Just add little bits of lye at a time, slow incorporation is crucial. Tip: I like to place my milk/lye solution bowl into another bowl of ice water to keep the solution from overheating. This helps keep your finished bar that really pretty cream color.
  • Melt oils together in a stainless-steel pot until fully liquid.  Be careful!  Oils heat up quickly.  If you need to, you can place them in an ice bath to cool.  I like mine around the 90°F mark.  Tip: I will use a stick blender to help incorporate the harder oils quickly to help keep oils from overheating.
  • Combine the cooled lye solution and melted oils when oils are around 90–100°F. I like my lye mixture as cool as possible, and normally can keep it around the 65-70°F mark.  Blend until the mixture reaches a light “trace” (similar to thin pudding).
  • Stir in fragrance and any colorants or additives you choose.
  • Pour into your mold. I like to pop it in the freezer overnight to keep it from over heating and cracking on top. I’ll take it out the next day, u mold whole frozen, and let it set on a cooling wrack for another 22 hours.
  • Let the soap sit undisturbed for 24–48 hours before unmolding.

Notes

Why Soap Needs to Cure
After 48 hours, the chemical reaction between the lye and oils (saponification) is complete, and the soap is safe to handle. However, it’s still very soft and contains extra moisture.
Curing allows the soap to harden as water evaporates, resulting in a longer-lasting bar with a gentler, creamier lather. A full cure typically takes 4–6 weeks, and patience during this stage pays off with better texture and performance.