A facial serum based on the Chinese ma fai plant (Clausena) of Nan province, formulated through research undertaken in conjunction with the University of Phayao. The product has anti-oxidant properties and works against the activity of tyrosinase and collagenase enzymes. It has already been registered and has achieved the community product standard. Kwantara adds value to existing community resources, promotes local culture, generates employment and strengthens the local economy.