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daisie
New Member
 
Joined: 02 Oct 2005
Posts: 5
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Thu Oct 06, 2005 10:22 am  |
What is unbuffered vit c? Would Vit C crystals (for using in a vit c serum) be unbuffered? How can i tell?
Also, how do I know how acidic my serum is? |
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Thu Oct 06, 2005 11:46 am |
hi daisie,
I really have no idea what you mean by unbuffered Vitamin C. Perhaps you are talking about unbuffered glycolic acid. Unbuffered glycolic acid has a low pH (so very acidic). Buffered means the pH has been increased, by adding other ingredients, so it isn't as acidic.
Your serum would need to be made according to a recipe or ratio of Vit C powder/crystals to a base. So, if you want to make 1oz (30ml) of C serum at 10%, you will have to add (approx.) 3ml l-ascorbic acid. There is a recipe in the DIY with measurements I believe.  |
_________________
~normal but prone to dryness~slightly sensitive~usually clear~totm breakouts~mid 20s~ |
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