crunchy31 Posted January 9, 2006 Share Posted January 9, 2006 :undecided When making lotions with a preservative, how much do you use?Lets say it's 24 ounces of lotion. I hear people say to use 1%....but what does that mean? I guess I'm math-retarded, but how do I figure out how much is 1%? sorry this is real new to me!:embarasse I'm just not sure how to accurately measure that out. Quote Link to comment Share on other sites More sharing options...
sudsnwicks Posted January 9, 2006 Share Posted January 9, 2006 It depends on which preservative you're using. Different ones have different recommended usage rates. The place you bought it from should be able to tell you. If you're using something that calls for 1% and your lotion is 24 oz, then you need to put 0.24 oz. To figure out how to get it, percent means 'divided by 100'. So 1% means 1/100. You would then take 1/100 and multiple it by your lotion amount (the 24 oz). Quote Link to comment Share on other sites More sharing options...
crunchy31 Posted January 9, 2006 Author Share Posted January 9, 2006 Thanks! Quote Link to comment Share on other sites More sharing options...
daniedb Posted January 9, 2006 Share Posted January 9, 2006 Just to be anal, I wanted to encourage you to double check the percentage they recommend. Most preservatives are recommended at POINT 1% instead of 1% - which makes a big difference in how much you use. I would just hate for you to make a batch that could irritate someone's skin and cause you to have complaints! Quote Link to comment Share on other sites More sharing options...
crunchy31 Posted January 9, 2006 Author Share Posted January 9, 2006 Oh gosh I think you're right! I will definitely check that. Thanks! Quote Link to comment Share on other sites More sharing options...
cindym Posted January 9, 2006 Share Posted January 9, 2006 If you do a google search for Herbal Soaps and Toiletries by RJ's, there are quite a few calculators there that help you figure out recipes. Quote Link to comment Share on other sites More sharing options...
crunchy31 Posted January 10, 2006 Author Share Posted January 10, 2006 Oh what a lifesaver- thank you so much! I was feeling like such an idiot being the only one who couldn't figure that out.:undecided Quote Link to comment Share on other sites More sharing options...
Jeana Posted January 10, 2006 Share Posted January 10, 2006 Just to be anal, I wanted to encourage you to double check the percentage they recommend. Most preservatives are recommended at POINT 1% instead of 1% - which makes a big difference in how much you use. I would just hate for you to make a batch that could irritate someone's skin and cause you to have complaints!I'm curious how to weigh .1% of something. My scale would not register an amount this small unless I had a very large batch. Quote Link to comment Share on other sites More sharing options...
donna4909 Posted January 10, 2006 Share Posted January 10, 2006 For preservatives calling for .1%, in a small recipe, you need a very accurate scale. I have this one:http://www.oldwillknottscales.com/index.asp?PageAction=VIEWPROD&ProdID=97It can measure to 0.1 gram or .005 oz. Quote Link to comment Share on other sites More sharing options...
Jeana Posted January 11, 2006 Share Posted January 11, 2006 Thanks, that is a dinky amount it measures. You only use if for the small stuff, right, not the rest of your oils? Quote Link to comment Share on other sites More sharing options...
donna4909 Posted January 11, 2006 Share Posted January 11, 2006 Correct. 550g capacity was the largest I could find that would still be able to measure in .1 gram increments. I'm sure there's one out there with 10 lb. capacity and will measure to .1 gram, but I didn't want to spend over $100 or anything, so this one was good enough for me. Quote Link to comment Share on other sites More sharing options...
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