Philmoo Yoo could not attend high school due to a difficult family situation and had to start working to earn a living. He took on whatever jobs he could find to support himself, and at the age of 16, he entered a brush workshop on a relative's recommendation. Seeing the various brushes on display, Philmoo thought to himself, "If I learn this craft well, I can become someone who creates valuable things." After ten years of focusing on making traditional brushes, he opened his own workshop for the first time. However, with mass production of artificial brushes, traditional Korean brushes were on the verge of losing their place. Despite this, Philmoo did not give up and he has devoted his life to making traditional Korean brushes using techniques unique to Korea. In 2018, he was recognised as a human cultural asset by the Korean government for his effort to preserve this tradition.
Philmoo Yoo