Bentonite is an absorbent aluminium phyllosilicate clay consisting mostly of montmorillonite. It was named by Wilbur C. Knight in 1898 after the Cretaceous Benton Shale near Rock River, Wyoming.
How to use Bentonite Clay? Use on skin to heal eczema, dermatitis & psoriasis
When combined with water and left to dry on the skin as a clay mask, the clay is able to bind to bacteria and toxins living on the surface of the skin and within pores to extract these from the pours. This helps to reduce the outbreak of blemishes, alleviate redness, and also to fight allergic reactions from irritating lotions or face washes, and even helps help poison ivy.
Bentonite clay can be applied to any area on the skin of babies that is irritated, red or needs soothing in the same way that traditional powders are used. Plus, it is very gentle and naturally cleansing.
Apply a small amount of the clay directly to the skin and allow it to sit for several minutes before wiping/rinsing it away.
Source: wikipedia, draxe.com