Handy free recipe calculator
When making professional skin and hair care products for accuracy, we use weight measurements (grams) rather than volume (cups, drops, teaspoons, fluid oz).
So we can make any size batch, recipes are in %. I’m frequently asked the best way to convert percentages of ingredients to weight measurements (grams).
(If you are making a lotion, don’t forget to add an extra 10% to your water amount to allow for water evaporation during the 20 min heat and hold).