Nxtgen Ayurveda Multani Mitti or Fuller’s earth has quite a number of benefits and uses for various skin types. Multani mitti is a rich source of magnesium chloride, which helps fight acne and prevents breakouts. It has a cleansing effect, which removes the dirt and other particles on our face that occur due to exposure to pollution and our surroundings. The most popular use for skin is as a face pack or mask. Face packs are available for dry, oily, acne-prone and normal skin types.