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Separation in guarcat and decyl glucoside shampoo
I originally posted on reddit and got some replies over there so here’s the link if it helps - https://www.reddit.com/r/DIYBeauty/comments/1hxgy1l/shampoo_separating/
I don’t even want to make this formula anymore but I want to figure out what the issue is. It’s eating away at me!
Formula: 62.5% water, 2% glycerin, 2% dl panthenol, 0.5% guarcat, 20% decyl glucoside, 10% cocamidopropyl betaine, 0.75% rosemary essential oil, 0.75% peppermint essential oil, 1.5% optiphen plus.
I made a slurry of the glycerin and guarcat. Then I heated the water until it was warm and added the guarcat slurry. Stirred and then tested pH. Used citric acid to bring it down to 5.5. Then I used a little mini mixer for about 60 seconds. At this point it was super thick and clear with bubbles suspended in it. I then added the panthenol and stirred until combined. In another beaker I mixed the surfactants and added the essential oils and mixed some more. Then I poured the water beaker into the surfactants and stirred until combined. Tested the pH and used citric acid to get the shampoo to about 5. Then I added the optiphen plus and stirred. Bottled it up and let it sit overnight.
Any idea what’s going on? I made the same recipe but replaced the decyl glucoside with aos-40 and it’s perfectly fine. Normally I use anionic surfactants with cocamidopropyl betaine in my shampoo and body washes but this time I wanted to try a nonionic just to see what it was like.
I made another batch without any essential oils and it is still separating ever so slightly at the bottom. I’ve gone through a lot of posts on here and have seen some people say that 1) guarcat should be added at the end because it needs all of the available water in the formula, even the water in the surfactants 2) add guarcat to the water, mix for 15 minutes, add capb next followed by decyl glucoside 3) there’s too much salt in the capb and decyl glucoside can’t handle it 4) too much citric acid glueing the cationics together. I plan on doing more testing but was just curious if anyone knew what was happening. Thanks!
Shampoo separating?
byu/PeachandHoney13 inDIYBeauty -
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