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Ha! I am anything but an expert on making lotion. The only reason I learned how is because it was so dang expensive to buy the urea cream I was using for my feet. I bought some emulsifying wax flakes from a seller on Etsy (along with salicylic acid and lactic acid), looked up some recipes, got the basic idea, and tried my own. Basically, I take 1/2 cup urea and add 8 ounces of hot water and stir until dissolved. I do this in a glass mason jar. Then I take about 3 oz. of olive oil, put 3 tbsp emulsifying wax in it, and heat it in the microwave for one minute so the wax melts into the oil. Pour the hot oil into the warm water while stirring and continue to stir frequently as it cools, and voila! Lotion.
So, if my calculations aren't off, that recipe makes about 30% urea. However, the lactic acid I have is in liquid form, and I don't have any kind of information on the concentration it's at ... it's just this bottle labeled "lactic acid." So I made a wild guess and added 2 tbsp to the cooling lotion.
It stings a bit when I put it on, but hasn't done anything weird to my skin, so I guess it's safe at least. I've put it on my face for two nights and had no problems. It remains to be seen whether it clears up the KP, though. I wanted to test the pH, but I can't find my test strips. I have them around here somewhere ...
Most lactic is supplied as an 88% solution for formulating unless otherwise specified (someone selling a peel, etc.)
You have the lotion right where I would want it...it stings, so you know there is something in there...but the sting wears off and it doesn't make you red or irritated. Any truly good acidic lotion should sting a bit on application.
Hope to get a reply since this is a pretty old thread. I wanted to touch base with kylesmom. I use organic/natural products as much as possible. I have recently found out that my annoying little red spots on my arms are KP and wanted to know if you can tell me how to make a lactic acid lotion from scratch? I hope you can help! Thanks a bunch!
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