한 Yoon Yoon (윤) is a South Korean Female Artist. She started in group 4Ten. Read All General Information International Stage Name : Yoon Domestic Stage Name : Pronounce 윤 Full Name : Heo Yoon Pronounce Full Domestic Name : Pronounce 허윤 Date of Birth : 1994-09-23 (age 32) Zodiac : Libra Country of Birth : South Korea Related Artists : 4Ten - Vocal Original group : 4Ten Images