Weekend Wonderings: How to include an oil soluble ingredient in a surfactant based product, like a shampoo"
In this post, Creating a daily use shampoo, longqtruong asks, You have dimethicone in your daily shampoo formula which is not water soluble. Do we need a solubilizer or emulsion system to make this work"
The short answer is probably not. The longer answer is as follows...
You're right: The forms of dimethicone I've been using in my products aren't water soluble - there are some like PEG-8 dimethicone or amodimethicone which are - but I'm including them in my shampoo without an emulsifier or solubilizer. This is because surfactants - the foamy, bubbly, lathery kind - are surfactants or surface active agents that have some emulsifying power in them.
I've been playing with water soluble dimethicones and I'm very excited about them! There'll be lots more about them shortly...
Surfactants have a hydrophilic (or water-loving) head and a lipophilic (or fat-loving) tail. The hydrophilic head clings onto watery stuff - say the water phase of our lotion - and the lipophilic tail creates a ball around the oily stuff - the oil phase of our lotion.
The bubbly surfactants we use work the same way. They surround the sebum on our scalp or body and put it in a little micelle to be washed away. (Check out this post on how shampoo works to learn more.)
They can do the same thing with an oil soluble ingredient like dimethicone or olive oil, for example. But some surfactants are better as this than others. If you look at the surfactant comparison chart, you'll see that C14-16 olefin ...
Fuente de la noticia:
Point of Interest
URL de la Fuente:
http://swiftcraftymonkey.blogspot.com
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