Lyla Lindsey
Making soap at home is a fun and cost-effective activity that allows you to explore your creative side and choose ingredients that are good for your skin. The process of making soap involves combining fats or oils, lye, water, fragrances, colourants, and any other additives you wish to include. It is important to handle lye with caution and always add it to water, wearing protective gear such as gloves and eye protection. The soap mixture needs to be stirred thoroughly and then poured into moulds to set. After 24 hours, the soap can be cut into bars and left to cure for several weeks. With the growing trend of homemade soap in Australia, soap-making can also be a lucrative endeavour, allowing you to blend creativity with practicality and produce a product that is always in demand.
| Characteristics | Values |
|---|---|
| Ingredients | Fats or oils, lye, water, fragrances, colorants, and any additional additives |
| Equipment | Scale, thermometer, immersion blender, mixing containers, gloves, safety goggles, soap mould |
| Cost | $500 for a small-scale venture, up to a few thousand dollars for high-quality soap |
| Selling price | $3 to $6 per bar for basic formulations, $7 to $12 for premium, $10 to $20 for specialty options |
| Process | Mix ingredients, stir, pour into mould, cure, unmould, cut, package and label |
| Time | 24-48 hours in a mould, then several weeks to cure |
| Lye handling | Wear protective gloves and eyewear, do not involve children or pets, add lye to water, neutralise spills with vinegar |
| Oils | Coconut oil for lather, olive oil for smoothness, palm oil for hardness |
| Essential oils | Lavender, peppermint, clary sage, grapefruit |
| Colourants | Mica pigments, iron oxides |
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What You'll Learn
Choosing ingredients: oils, fats, lye, water, fragrances, colourants, additives
The ingredients you choose for your homemade soap will depend on the characteristics you want it to have. For example, you might want a soap that has a good lather, is moisturising, or has a certain colour or fragrance. Here are the key ingredients you'll need and some considerations for choosing them:
Oils
Oils are one of the most important ingredients in soap making, as they give your soap its unique character. Different oils will affect your soap's moisturising properties, how well it lathers, and the designs you can create. Common choices include coconut oil for lather, olive oil for smoothness and moisturising, and palm oil for hardness. You can also use essential oils like lavender, peppermint, clary sage, and grapefruit to add scent to your soap. Just make sure to use no more than 3-4% essential oil by volume, as these oils are very concentrated.
Fats
Fats are another key ingredient in soap making and can be combined with lye to create a reaction called saponification. Your choice of fat will depend on what you have available and your personal preferences. Animal fats were traditionally used, but plant-based fats like shea butter are also popular for their moisturising qualities.
Lye
Lye is essential for soap making, as it allows you to combine liquid oils and gives soap its cleansing properties. However, it requires careful handling due to its caustic nature. Always add lye to water (never the other way around) and use protective gloves, eyewear, and adequate ventilation to avoid breathing the fumes. You'll also want to have white vinegar on hand to neutralise any spills.
Water
Water is necessary for mixing with lye and creating the chemical reaction that forms the basis of your soap. Distilled water is best, and you'll want to measure it accurately using a scale or a measuring cup.
Fragrances
In addition to essential oils, you can use fragrance oils to add scent to your soap. These are typically synthetic and may be included in soap-making kits.
Colourants
You can add colour to your soap using synthetic or natural colourants. Mica pigments are a popular choice as they don't clump and produce mesmerising prismatic shades. However, natural colourants like plant materials can be more challenging to work with as they may change or fade over time.
Additives
You can also add other ingredients to your soap to give it extra properties. For example, you can add ground oats or bran for a mildly abrasive but softening soap, or sugar for a soap that cleans greasy hands. Just be sure to add these ingredients quickly once your soap reaches trace (when a spoonful of the mixture holds a trail when drizzled on the surface).
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Preparing the workspace and ingredients
Before beginning, gather all the ingredients and equipment. Common ingredients for soap-making include fats or oils, lye, water, fragrances or essential oils, and colourants. Oils such as coconut oil, olive oil, and palm oil are popular choices, each contributing different characteristics to the final product. For example, coconut oil provides a good lather, olive oil adds smoothness, and palm oil provides hardness. Other additives like shea butter can be included for moisturising qualities. It is essential to have accurate digital scales to weigh the ingredients, as measuring by volume is not accurate enough.
In addition to the ingredients, you will need equipment such as a thermometer, an immersion blender, stainless steel or heavy-duty plastic mixing containers, and a soap mould. The mould can be made of silicone or lined with freezer paper if using a wooden or cardboard box. Other creative options for moulds include loaf tins lined with parchment paper, silicone bread loaf pans, or heavy-duty cardboard boxes.
When preparing the ingredients, it is crucial to follow specific safety guidelines when working with lye. Always add lye to water and never the other way around, as this can create dangerous hotspots. Rinse any containers used for the lye mixture with water and then with white vinegar to neutralise any remaining lye.
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Stirring and combining the mixture
When stirring and combining the mixture, it's important to remember that the process can take anywhere from 10 to 60 minutes. Be patient and thorough at this stage, as rushing it may cause the soap to not set properly or even separate into two layers. You should stir until a spoonful of the mixture holds a trail when drizzled on the surface—this is referred to as being "at trace". Make sure you scrape any crusty deposits that form on the sides of the bowl and mix them into the rest of the mixture.
Once the mixture is at trace, you can quickly add any extra ingredients and essential oils. Work quickly and incorporate them well. Essential oils with lasting scents are recommended, such as lavender, peppermint, clary sage, and grapefruit. You can also add colourants at this stage, such as mica pigments, iron oxides, and natural colourants. However, be aware that colouring soap using natural materials can be difficult, as colours often change or fade in the presence of caustic.
After you've added your desired ingredients and the mixture is well-combined, it's time to pour the soap into your prepared moulds. Any container will work, but loaf tins lined with parchment paper are a popular choice. Cover the moulds with parchment paper and set them in a cool, dry place, away from children and pets.
If you're using the cold process method, you'll need to let the soap cure in the moulds for about 24 to 48 hours before removing it. The hot process method speeds up this initial saponification time by using heat, usually in a crockpot. Regardless of the method, the soap will then need to cure for several weeks before it's ready to use.
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Pouring the mixture into moulds
When your mixture is ready, it's time to pour it into your moulds. This stage should be quick but careful. You can use any container as a mould, such as a loaf tin, a silicone bread loaf pan, a heavy-duty cardboard box, or even make your own out of a box lined with parchment paper. If using a wooden mould, line it with freezer paper. If your mould is made of silicone, you don't need to line it.
Cover your moulds with parchment paper and set them in a cool, dry place, away from children and pets. Leave the soap in the moulds for 24 hours for the cold process, or heat the mixture in a crockpot to speed up the saponification time with the hot process.
After 24 hours, or when the soap has set, remove the soap from the moulds. Put on gloves and take the soap out of the moulds, then cut it into bars.
Leave the bars somewhere cool and dry to cure for about four weeks. Then, your soap is ready to use!
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Curing, unmoulding, cutting, packaging and labelling
Curing your soap is a critical step in the soap-making process. After unmoulding, your soap needs to be cured for a period of 4 to 6 weeks. During this time, the water in your soap evaporates, leaving you with a harder, longer-lasting bar. Choose a well-ventilated area that is out of reach of children and pets. The room should be cool and dry, with a consistent temperature; avoid direct sunlight. Place the soap on a wire rack or a wooden surface, ensuring the bars are spaced apart and are not touching. Turn the bars over every week or so to ensure even curing.
Unmoulding your soap involves carefully removing it from its mould. The time it takes for soap to harden and be ready for unmoulding varies depending on the recipe and the mould used. A good indication that your soap is ready is when it has hardened to a similar texture as a firm cheese. For basic moulds, such as a
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Frequently asked questions
You will need fats or oils, lye, water, fragrances, colourants, and any other additives you plan to use. Common choices for fats and oils include coconut oil, olive oil, and palm oil.
You will need a scale to weigh ingredients, a thermometer, an immersion blender, mixing containers (heavy-duty plastic or stainless steel), rubber gloves, safety goggles, and a soap mould.
First, gather your ingredients and prepare your workspace. Then, stir and combine the mixture thoroughly. Next, pour your soap into a mould and let it set. Finally, cure your homemade soap, unmould and cut it into bars, then package and label it.
Lye is an essential ingredient in soap making, but it requires careful handling. Always wear protective gloves and eyewear, and make sure to work in a well-ventilated area. Add lye to water and other liquids, as adding water to lye can create a dangerous reaction. Lye solution gets hot quickly and produces strong fumes, so avoid breathing them in.
