Levitt also points outs that, in addition to bar form, olive oil castile soap is sold to the beauty trade in chips or powdered form. ... Preparation of shampoos of the first type is quite simple and consists chiefly of mixing and sifting ... According to Hewitt, (43) for reddish brown shades, powdered henna is commonly used.
|Title||:||Soap, Cosmetics, Chemical Specialties|