Khao Kam is a local agricultural plant that is famous in the Wiang Lo archaeological site, Chun District, Phayao Province, Thailand. Mae Fah Luang University has therefore brought Kao Kam to study until it discovered its properties in skin care. And has brought the extract of Khao Kam that is full of antioxidants to produce a facial serum under the brand name "Wieng Lor Cos" (Wiang Lo Kos). Now the first product is RiceAntho Intensive Serum. that are ready for tourists to buy back to use or as a souvenir.