How to Make Soap at Home — DIY Cold Process Recipe & Tips

How to Make Soap at Home — DIY Cold Process Recipe & Tips

Sofija Goncaronoka
Make Your Own Soap – The Key Points:
  • Using natural ingredients like oils, butters, and lye, you can make nourishing, solid soaps yourself quite easily.
  • The process takes around two hours — after that, the soap bars need to cure for 4 to 6 weeks.
  • For beginners, the Melt & Pour method is ideal: you melt a ready-made soap base and add your own creative touches.
  • Safety first: working with sodium hydroxide (NaOH) requires care and good preparation.
  • Ready to get started? In my soap-making workshop in Munich you'll learn everything about making soap — including instructions, equipment, and a great atmosphere.

Making your own soap at home is a wonderful DIY project: you decide what goes in, can creatively choose the scent, colour, and shape — and end up with a completely individual, sustainable product.

How to Make Soap at Home – Cold Process Recipe

If you want to make soap yourself using the Cold Process method, you only need a few high-quality ingredients. Here is a simple, nourishing homemade soap recipe:

Soap Ingredients (for approx. 1 kg of soap):

  • Olive oil – 245 g
  • Coconut oil – 175 g
  • Shea butter – 70 g
  • Cocoa butter – 70 g
  • Avocado oil – 105 g
  • Castor oil – 35 g
  • Distilled water – 266 g
  • Sodium hydroxide (NaOH/lye) – 97.18 g
  • Optional: essential oils, colourants, flowers, clay

This DIY soap recipe combines nourishing oils and solid butters — ideal for a caring, creamy natural soap.

Ingredients for soap

How to Make Soap – Step-by-Step Instructions:

  1. Weigh out the fats and oils and melt them slowly.
  2. Make the lye: carefully add NaOH to the water (never the other way around!) and let it cool.
  3. Allow both mixtures to cool to approx. 35–40°C.
  4. Add the lye to the oils and blend with a stick blender until the mixture thickens (trace).
  5. Stir in fragrance, colour, or decoration.
  6. Pour the soap into the mould, insulate, and let it harden for 24–48 hours.

Soap in a mould

7. Then cut the soap into bars and let it cure for four to six weeks.

A person cutting soap

Soap-making workshop
Want to learn how to make soap under professional guidance? In my classes I put together the best ingredients and guide you step by step through the soap-making process.
— Sofija

How Long Does It Take to Make Soap at Home?

Making your own soap takes about two hours. However, the soap should then harden for 24–48 hours before you cut it into bars and let it cure for four to six weeks.

In my workshop, where we pour soaps together, I explain exactly how to get started, what you need, and how to use a soap calculator to plan your own recipes safely. The actual making of the soap goes quickly — the preparation usually takes longer than the mixing.

Black and white soap bars on a cake stand

Tips for Making Homemade Soap

  • Working with lye (NaOH) requires care — I'll show you in the class how to handle lye safely.
  • After making, the soap should cure for 4–6 weeks.
  • Prepare all ingredients and tools well in advance — this reduces stress during the soap-making process.
  • Making cold process soap from scratch seems too complicated? Try Melt & Pour soap: you melt a ready-made base, add colour and fragrance, and you're done. Perfect for beginners!

Purple and white soap pieces in powder

Learn Soap Making at SOFIA.SHIK – Workshop in Munich

At SOFIA.SHIK you can learn both soap-making methods hands-on:

  • Melt & Pour Workshop: Learn how to pour and customise your own soap.
  • Cold Process Workshop: Learn how to make soap from scratch using natural oils and lye.

I explain everything clearly and step by step. Equipment and ingredients are provided, and you'll leave with everything you need to carry on safely at home. All of this in a cosy atmosphere — with snacks, drinks, and plenty of inspiration!

If you want to make your own soap but don't know where to start — join my soap-making workshop and I'll walk you through everything at a relaxed pace.

Make Your Own Soap – FAQs:

Is making your own soap dangerous?

Not fundamentally — but working with sodium hydroxide (NaOH), i.e. lye, requires care. Mixing incorrectly (for example, adding water to lye instead of lye to water) can cause dangerous chemical reactions. It's important to work with safety goggles, gloves, and good ventilation. If you follow a tried-and-tested guide and observe the necessary safety rules, the risk is well manageable. Even safer: a workshop with guided instruction.

How long does homemade soap need to cure?

After making, Cold Process soap needs to harden for 24 to 48 hours before it can be removed from the mould and cut into bars. This is followed by the curing period: at least four to six weeks. During this time saponification continues — the soap becomes milder, firmer, and more durable. Melt & Pour soaps, on the other hand, are ready to use immediately.

Which oils are good for handmade soaps?

The choice of oils influences the skin-care properties, lather, and hardness of the soap. These base oils are particularly popular: olive oil, coconut oil, castor oil, and avocado oil.