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Tweaking the Simple C Serum
EDS Skin Care Forums Forum Index » Skincare Tools & Do-It-Yourself Skincare
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erg
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Mon Sep 06, 2010 6:04 pm      Reply with quote
Just a quick look at your math, it does look like that is a 20% concentration.

Here is a great tool to help you formulate - you just enter in the percentages you want of each active and it will convert to ounces, grams, etc.
http://www.wholesalesuppliesplus.com/Calculators/Batch_Size_Calculator.aspx

20% is a rather strong vitamin C concentration. I would suggest increasing your concentration from 10 to 15% rather than jumping to 20%.

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DarkMoon
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Mon Sep 06, 2010 6:19 pm      Reply with quote
Sorry here is the link:

http://www.essentialdayspa.com/forum/viewtopic.php?tid=30848

Very Happy

ETA

There are also a few more online calculators here:

http://www.essentialdayspa.com/forum/viewtopic.php?tid=39428

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McRachel
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Mon Sep 06, 2010 7:25 pm      Reply with quote
Perfect. I think I got so wound up in ingredients that I missed the calculator. Thank you for your help.

And also, I'm going to keep the 10% on my face for a bit. I've been using the formula you posted DarkMoon, and it's great so far.

you guys are great. Thanks for your patience with a Newb.
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