Licorice extract is the essence of the licorice plant (Glycyrrhiza glabra) which grows wild in the Middle East and southeastern Europe. Other names for the plant from which the extract is produced include sweetwood and black sugar, since the extract is very sweet. Licorice extract is light brown in color and is taken from the roots of the plant. Although the extract is available in liquid form, it also can be concentrated into sticks.
Production
There are two main methods of making licorice extract. In both methods, the roots of the licorice plants are harvested and dried, after which they are cleaned. In the first method, the licorice roots then are ground into powder, which can then be used as is or mixed with water. In the second (more modern) method, the roots are pulped and boiled, and the extract is concentrated by allowing the water to evaporate. If the extract is in dried form, it can be stored indefinitely.
Benefits
Licorice extract contains glabridin, a component that acts as a natural and gentle skin whitener with soothing action makes it suitable for sensitive skin. Used in cleansers, serums, moisturisers and spot treatments, it help to lighten the skin color safely for all skin tones by inhibiting melanin formation (it blocks the formation of melanin), mainly by inhibition of tyrosinase activity to prevent more from forming. Skin is left brighter, clearer and hydrated. Full of potent antioxidants with powerful anti-inflammatory effect, licorice root extract is particularly soothing and effective for inflamed, red, and acne-prone skin, as well as tired, dull and dehydrated complexions. The root even contains a compound that works as a mild sunscreen, shielding from UVA/UVB rays, so that your newly bright and rejuvenated skin stays that way.
Source:
http://allaboutskinlightening.net/2010/02/featured-ingredient-licorice-extract.html
http://beautifulwithbrains.com/2011/07/02/know-your-ingredients-licorice-extract/
http://blog.shesaidbeauty.com/2012/04/23/inside-your-ingredient-licorice-extract/
http://beautifulwithbrains.com/2011/07/02/know-your-ingredients-licorice-extract/
http://blog.shesaidbeauty.com/2012/04/23/inside-your-ingredient-licorice-extract/



