Rhassoul or Ghassoul is a mineral rich, yellowish/beige clay powder that blends extremely well with water and is considered a swelling clay because of its great capacity to absorb liquids quickly. This volcanic clay contains a high percentage of magnesium plus silica, potassium, calcium, iron, copper, zinc and lithium.
For greasy hair or hair which lacks volume and thickness, you can make a simple hair mask by adding warm water to Rhassoul and applying it throughout your hair, rinse after 15 or 20 minutes until the water runs clear. This mask will also give the hair shine.
For soapmaking, use a maximum of 2%. Increase the amount of liquids when used in cold process soaps. For other uses, recommendations are usually half a teaspoon clay to 1.5 teaspoon liquid.