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Cold press coconut oil bar on background of pine tree

Coconut Oil Soap

A simple, hard, bubbly 100% coconut oil cold process soap recipe with a gentle 10% superfat and fast cure time.
Serving Size 12 (4oz) bars

Equipment

  • digital scale
  • medium stainless steel pot
  • wooden or metal spoons
  • rubber gloves
  • safety goggles
  • sturdy plastic or glass container (for mixing the lye)
  • digital food thermometer
  • immersion blender

Ingredients

  • 32 oz coconut oil
  • 4.56 oz sodium hydroxide (lye)
  • 12.16 oz filtered or distilled water
  • 0.5 oz frankincense essential oil (optional - see recipe notes)
  • 0.5 oz cedarwood essential oil (optional - see recipe notes)

Instructions

  • Safety is important when making soap. Be sure to wear gloves, goggles, and long sleeves. Work in a well-ventilated area. Get someone to watch your kids or pets while you work - you should not be disturbed while making soap.
  • Place coconut oil in a medium stainless steel pot over low heat. Stir until fully melted. Remove from heat.
  • In a well-ventilated area, and with gloves and goggles, slowly add lye to water, stirring until fully dissolved. Let it cool.
  • Allow both the oil and lye solution to cool to 37–43°C (100–110°F). They don’t need to match exactly.
  • Once cooled, slowly stir the lye solution into the melted oil. The mixture will turn creamy and opaque.
  • Use a stick blender in short bursts, alternating with stirring, until the soap thickens to light trace (thin ribbons remain briefly on the surface). Blend in essential oils if using.
  • Place silicone molds on a sturdy tray. Ladle soap into molds, leaving a little space at the top.
  • Cover molds with plastic or baking paper, then wrap with a towel or blanket. Let rest 24 hours.
  • Wash all tools immediately with hot, soapy water by hand.
  • After 24 hours have passed, check your soap. Wooden/cardboard molds: cut when firm. Silicone molds: may take several days to remove.
  • Place bars on a rack in a dry, cool area with good airflow. Cure 4–6 weeks.

Notes

  • Always measure ingredients by weight for accuracy and safety.
  • Lye is caustic — never pour water into lye. Always add lye to water.
  • Trace can happen quickly with 100% coconut oil; work efficiently.
  • You can add 1 ounce of your favorite essential oil to this soap or you can leave it unscented. For a winter-themed soap like mine, I recommend adding 0.5oz frankincense and 0.5oz cedarwood essential oils.