d-Limonene. This fancy sounding ingredient is orange oil - you've seen the ads for cleaners with this stuff before - and it's a fantastic way to cut through grease from your oil soluble ingredients.
It's super easy to use - mix 5% d-Limonene with 5% polysorbate 20, caprylyl/capryl glucoside, or PEG-40 hydrogenated castor oil, then add to 90% of your favourite dishwashing liquid and you have yourself a grease cutting liquid that can't be beat!
I also make an awesome spray cleaner with it!
SURFACE CLEANSER - with surfactant
5% polysorbate 20
6% surfactant of choice, including coco betaine or castille soap
0.5% to 1% preservative
Mix the polysorbate 20 and d-Limonene together in a small container. In another container, mix the surfactants together - try not to get too much foam - then preservative and mix together again. Add the polysorbate 20 and d-Limonene, and package in a spray bottle.
This won't be too foamy as the d-Limonene is an oil and the polysorbate 20 is a solubilizer, and neither of these play well with surfactants! So we're using their natural de-foaming and de-lathering abilities to creating a surfactant based cleanser that won't foam up too much!
And here's a version I found on the Voyageur website a while ago...
SURFACE CLEANER with castille soap
35 grams d-Limonene
40 grams polysorbate 20
405 grams water
35 grams vinegar
40 grams castille soap
2.5 grams liquid Germall Plus
Mix the first two ingredients together, then add the water, vinegar, soap, and preservative in that order. Mix well. Put into a bottle and rejoice.
I get mine from Voyageur Soap & Candle in Surrey, B.C., but I've seen it at New Direction Aromatics (Canada or USA site). It isn't expensive! At $10 for 250 ml, you've got enough to last you all year, unless you have a giant house and use tons of it! You can use orange or lemon essential oil for this application too, but they aren't as grease cutting as d-Limonene.
d-Limonene: Awesome cleansing power!
My favourite dishwashing liquid with d-Limonene
d-Limonene in your cleansers: More recipes