Marsh mallow root
Hi,
I've used this herb in my shampoo bar. It has been used for centuries for it's soothing effects. In a shampoo it acts as a detangler and also may have antibacterial properties thus helping with itchy scalp.
I infuse my liquid oils with herbs, keeping the temperature low. I'll infuse for at least several hours or better yet overnight. You can also make an infusion of your liquids (water, tea, juice or aloe mix) with herbs - this one will make a mucilage of your liquid.
Also, I strain the liquids sometimes twice either through a cheesecloth or even a coffee filter-although that can take some time and stirring.