Whenever I do any fancy swirls,I use these methods:
- Use oils which from my experience slow down trace,for example lard instead palm, virgin olive oil instead of pomace, I also add sunflower HO or almond oil and generally use either large (>35%) amount of olive oil or >20% of HO sunflower; I avoid cocoa butter or shea since I soap at low temps
- Put my lye water into freezer to make it really cold
- This could be controversial but I also put my melted oils into the freezer for some time (I watch them carefully and take out if they start being cloudy) - I never had any issues with separation (yet
)
- Use only selected EOs and FOs, avoid anything that could speed up trace (clove,flower FOs, untested fragrances from the latest delivery - ask me how do I know :???
- I rarely discount water;If I really trust my scent I would go down to 31% lye concentration but not higher
- If I want to use various colours,I use my blender only to the point of emulsification - so that the oils and lye water do not separate anymore when I stop blending, but I am still faaar away from lightest trace - I separate my batch then and mix in colours
- When I want to be uber safe, or whenever I don't want to stick to
one of the above rules, I also avoid sugar (sorbitol/milk/beer) in my soap because it also speeds up trace for me