Hello everyone !
I am working on a solid shampoo bar that I make via compacting. (mostly SCS @ around 70%, a small water phase and a bit bigger oil phase) I have heard that adding a fine powder of some sort would help the compacting (filling the small holes?). I have issues with the shampoo breaking down the line.... So I would like to add one that is in the list below, since it is available to me.
But, I have been warned by @Imosca
that I should not incorporate too much hygroscopic material in my solid shampoo. Hence, I would like to know how hygroscopic are these material ? Is there a way to find this out ? My objective would be then to select the one that is least hygroscopic...
Maybe not only the material counts but also its particule size ?
- zea mays starch
- avena sativa kernal flour (50 microns)
- Distarch phosphate (modified rice starch)
- arrow root powder
- hydrolyzed pea protein (90% protein)
- illite (green or red clay)
- kaolin (white clay)
- Rhassoul, maroccan lava clay
Thanks for your help !
Have a great day