SweetPatoot Posted February 3, 2006 Share Posted February 3, 2006 Just trying to play with an old, old recipe I found in my gram's cookbook. It's a "simple olive oil" recipe. I can't get it to work. I tried to tweak it a bit, adding preservative and all that up to date jumbo. Basically, it's equal parts olive oil and water with lecithin added. The lecithin for binding the water and oil together. I need help with percentages. I really suck at math. So, for ex. if I'm using 1/2 c water and 1/2 c oil, what percentage of a binding emulsfier do I need to add, and what percentage of preservative? Thanks for any help!Rebecca Quote Link to comment Share on other sites More sharing options...
RobinInOR Posted February 3, 2006 Share Posted February 3, 2006 Good luck! Never have tried lecithin (except when making mayo), but this page might give you some tipshttp://tooldoc.wncc.nevada.edu/mayo.htmLook down near the bottom after the HLB system, it talks about sample %s depending on if you have an oil in water or a water in oil emulsion.. since you're doing 50:50, not sure which way it would go Quote Link to comment Share on other sites More sharing options...
SweetPatoot Posted February 4, 2006 Author Share Posted February 4, 2006 thank you. I'm not planning on using lecithin, I think that's just what was used in the recipe. I was just interested in seeing if anyone had ever used such a "simple" recipe, just water, oil, emulsifier and preservative. I'm off to research emulsifiers and preservatives more. Thanks for the link.Rebecca Quote Link to comment Share on other sites More sharing options...
RobinInOR Posted February 4, 2006 Share Posted February 4, 2006 Yup, that's all you need for a lotion - oils, water, emulsifying wax as the emulsifier, and preservative. If you have more oil than water, you can make a stable emulsion with beeswax and borax as well. It's fun to add other things...Ewax is used around 5%. Never have used 50% oils, though, that would make more of a cream. Lotions stick around 20% or less oils. A chart I've picked up off the web for lotions (as a very general guideline):oily skin: 90% water/6% oil/ 4% ewaxnormal/oily: 87.5%/7.5%/5%normal: 83%/13%/4%normal/dry: 79%/16%/4%dry:80%/16%/4%My first lotion didn't have anything special in it - it was just a mix of RBO, meadowfoam, sunflower, avocado..Let's see, if you've got 1/2 cup of water, and 1/2 cup oil, you'd want to use something around 5% ewax for that high of an amount of oil. That's .05 cups, which would probably be around 2.5 teaspoons. Now that's a bad way to formulate, cuz you need to do it by weight to get it down right and stable, but that will give you a starting point at least. Quote Link to comment Share on other sites More sharing options...
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