How To Make Cold Process Soap
This video teaches about how to make your very own cold soap at home. You can experiment with different essential oils, colours and patterns.
Today, I am going to teach you how to make cold process soap. This is a favorite method used by soapier. It's fairly easy to do.
The down side is it takes four weeks before it is ready. We'll start by making up a solution called our lye solution, which is where we mix the sodium hydroxide and the water together in carefully measured quantities. I'm going to start by weighing the water.
There we are, absolutely spot on. I'll just move that out of the way, while I deal with the sodium hydroxide. The amount of sodium hydroxide I need is 70 grams, so very carefully, we'll weigh 70 grams into the bowl.
Now, this is cold water, but by the time I put the sodium hydroxide in and mix it, it's going to heat up and you may see some of the steam. So, literally, just pour that in and then I need to stir to make sure that all the little sodium hydroxide granules are dissolved into the water. That is now very hot.
If I put my hand underneath, that would be too hot for bath water even for me. I'm just going to pop that to one side out of the way while we put our oils into our saucepan as we need those to melt. Now, I have already weighed these but I can tell you what I've got.
We have 128 grams of coconut oil, straight in. We have 85 grams of palm oil and then finally, 40 grams of shea butter. Now, I'm just going to put the saucepan on to the heat so that these hard oils will melt and be as liquid as the olive oil.
So, butters and oils have melted. We're going to add the olive oil now, the reason I didn't add the olive oil is it doesn't need melting, it's already a liquid and that will help cool this liquid down ready for the lye. I'm just going to pour tiny bit of the lye into the saucepan in case there is any reaction.
Sometimes, if these are too hot, they might start fizzing. There's no reaction in there at all so I pour all the lye into my oils and I give it a stir around. Now, depending on the heat of the oils, the heat of the air and the heat of the lye, the amount of time I need to spend stirring could be anything from a few minutes to a couple of days really.
So, I'm going to speed the process up by using a hand held blender. I'm stirring until the soap actually gets a lot thicker. It will be a little like custard and we call that light trace.
I'll show you when I'm ready. Right, I think that looks like it's ready. So, you can see, it looks remarkably like custard.
And when I drizzle a little bit across the surface, it sits on the surface before sinking in. So, I can see where the trail is. That's what we call a light trace.
The mold I'm using for this soap is just a plastic sandwich tub and I have lined this with plastic which will make it much easier to come out. The pegs are just holding the lining in place. The essential oil blend I have chosen is lavender and rosemary.
I've got about 14 grams in total here and I've done half and half. So I'm just going to pop that in and give it a stir around to make sure it's completely mixed in. I'm just going to take a little bit of the soap mixture because I'm going to do something clever with some colour I hope.
But the rest of it, I'm going to pour straight into the mold and I can remove the pegs now. I've used some blue colouring, some blue soap colouring called ultramarine and I'm just going to put little stripes of blue across the top surface of my soap. Taking my wooden stick, I'm just going to flick lines through it.
I rather like, I think, a cream slice that you buy in the bakery. Now, this soap is the cold process soap, so I have to tuck it away now for 24 hours. And I'm going to put two or three towels over the top of it to keep it insulated.
And I'm going to leave it like that for 24 hours. After 24 hours, I will take it away from the blankets and then just leave it somewhere for three or four weeks to set very hard. Here's a soap I made four weeks ago, it's been sitting, curing, getting harder and harder and now, it's rea