I have always been a cold process soaper, with a bit of glycerin thrown in here and there. Over the years I kept seeing “HP” or “Hot Process” labels and articles, but I thought it was too difficult for me to try. So I didn’t. Then this summer, I had a request for a soap I didn’t have in stock: lavender.
She wanted it quickly, so I decided to jump in and try my hand at something I hadn’t done because of the fast turnaround. Whereas cold process (CP) takes 6-8 weeks to cure and cold process oven process (CPOP) takes around 4 weeks to cure, hot process takes around a week.
One week for a usable, fully saponified bar of soap? Yes please!
Since then, I have been using HP more and more. I am still learning, and I haven’t quite figured out how to do swirls just yet, but I love the quickness and easy cleanup.
First, I measure my ingredients. My current recipe uses beeswax, shea butter, coconut oil, canola oil, and sweet almond oil. I place these in a crock pot and turn it on high (beeswax needs a higher temperature in order to melt properly), then measure my sodium hydroxide and water. I pour the lye into the water (NEVER water into the lye!) and stir until the solution is clear, then I add a bit of table salt.
Yep, table salt. Makes a harder bar, much in the same way as sodium lactate does, but I have salt on hand already. So I use that instead.
Again I stir until clear and the salt is fully dissolved. Once the beeswax is completely melted, I turn off the crock pot and slowly pour the lye into the oils while pulsing with my stick blender. From here I blend until trace, then add the essential oils/additives.
When those are fully blended, I turn the crockpot on low and let it cook, stirring occasionally so the soap cooks evenly. When it all looks semi-transparent (kinda like vaseline) I start scooping the soap into molds, tapping them on the counter to remove air bubbles after each layer.
Now I let them cool completely, cleaning up my area while the soap sets up. Within a few hours they are ready to remove from the molds; the next day they can be cut. In a week, I have fully cured bars of soap, ready to use!