|
|
|
|
|
|
|
|
 |
|
| |
 |
| Author |
Message |
|
|
|
Mon Aug 06, 2018 6:42 pm  |
| If I wanted to make a simple 15% diy vitamin c serum, but wanted to add germal plus as a preservative, how much would anyone recommend? I am making 1oz of it..thank you, just can't find a recipe. |
_________________
39, fair skinned redhead, .1%micro retin A, lighstim, dermaroller 1.0, Patakara, vitamin c homemade, occasional skin bio peptides and lactic cream |
|
|
|
|
Fri Jan 18, 2019 7:09 pm |
OK! L-acidic acid that you make at home with the correct pH (around 3.2) will not need preservatives since it's in such acidic environment.
My concern is STABILITY of Vit C and no preservatives will help that.
So make small patches and throw out every 3 days (max 5 days).
It can be made substantially more stable if your formula contains a large percentage of ethanol. Ferulic Acid will also help stabilize it (eg look at the Skinceutical forumlation). |
|
|
|
|
| Sat Feb 01, 2025 7:40 am |
If this is your first visit to the EDS Forums please take the time to register. Registration is required for you to post on the forums. Registration will also give you the ability to track messages of interest, send private messages to other users, participate in Gift Certificates draws and enjoy automatic discounts for shopping at our online store. Registration is free and takes just a few seconds to complete.
Click Here to join our community.
If you are already a registered member on the forums, please login to gain full access to the site. |
|
 |
|
|
|
