Goat's milk soap is famous for being mild on the skin and great for people sensitive to chemicals or even other soaps. I make it regularly, and it does not take much more effort than water-based cold-process soap, so why not give it a go?
- Goat's milk (pasteurized and frozen) 280 grams
- Sodium Hydroxide (Caustic Soda) 120 grams
- Coconut oil 240 grams
- Sustainable Palm oil 160 grams
- Cold Pressed Australian Olive oil 400 grams
- Rose Geranium Essential oil, 10 ml
- Frankincense essential oil 5 ml
- Mauve Mica, one tablespoon
- Starlight Green Mica, one tablespoon
Safety: When added to any liquid, caustic soda becomes a strong alkaline solution and will burn when it comes in contact with your skin. You must be careful not to spill or splash any on you during the soap-making process. If you get any on your skin, immediately rinse it in cold running water. Always wear your safety glasses, goggles, and rubber gloves before handling caustic soda. Always add the caustic soda to the liquid and not the liquid to the caustic soda. Even after you have mixed the caustic soda solution with your oils and have a soap, this soap mixture can still burn you as the saponification process is not complete until the soap is cured, and the soap mixture is still very alkaline and can still burn you.
- Milk that is used in soap-making must be treated first to prepare it for the soap-making process. You do this by ensuring that your milk is pasteurized. This is easy if you purchase your milk from the grocery store, as this milk will already be pasteurized.
- The second thing you need to do to the milk is to freeze it. I pre-measure my milk into 280 grams batches and freeze it overnight, taking it out of the freezer in the morning and letting it start to thaw out before my soap-making. I want this milk to be cold and even partially frozen, like a slushy, when I add the caustic soda.
- Place your goat's milk slushy into the container you will be using to make your lye solution and then place this container into a sink of cold water and add ice cubes to the water. You want this iced water to reach up to the level of the milk in your container. Be careful not to add too much water, as your container will start to float and may spill.
- Put on your rubber gloves and your safety goggles. Using accurate kitchen scales, carefully weigh out all of your ingredients. I measure my caustic soda first, then place it into a small dry bowl. Measure each of your oils and place them all together into your soap pot or stainless steel bowl.
- Slowly add a small amount of your measured caustic soda to the milk. As it starts to dissolve, it will start to heat up. Stir the solution gently and then wait for it to cool down. As a rule of thumb, you do not want the solution to get above 38 degrees C.
- Add more of your caustic soda, and following the same procedure, wait until the solution cools down. Continue to do this until you have added all of your caustic soda to your milk.
- The solution will change to a golden yellow as you mix in your caustic soda. This is natural and does not mean that there is anything wrong. This colour will be transferred to your soap. Just be sure it does not get heated above 38 degrees C, as this will make it much darker and produce an offensive
- If the surface is not smooth from when you poured your soap, give them a little shake, and it will smooth out. The same applies if you are using some other container as a mould.
- Cover your soaps with another tray or a cardboard box. Wrap your mould(s) in insulating material such as a blanket or old towels to keep them warm. Place them in a warm location. I usually use my kitchen, as this is the warmest room in my house.
- Allow your soap to sit undisturbed for 24 to 48 hours.
- Check your soaps for firmness. They should be firm to the touch but not rock-hard. If it is still too soft to remove from the mould(s) without damaging the shape of the soap, leave it longer. Once it is firm to the touch, simply pop the soap out of the mould.
- Cut your soaps to the size you want and place them on a plastic needlepoint screen, sushi mats, or something similar to air dry. You want something that will allow air to circulate around the soap. Turn your soap over once a week.
- Allow your soaps to cure for six weeks before using your soap. This allows for the saponification to be completed.
What you can do is limited only by your imagination. This simple goat's milk soap smells divine, and I love the colour combination and random pattern. You will note that it looked a little thick when I was pouring it into the moulds. In truth, I mixed it just a bit too long as I was trying to get a good photograph of trace. Thinner would have been better.
As always, live well.