The IU posted an article and several photos on his instagram on the afternoon of the 15th, "Huh? My Eyebrow".
The photo showed a different color-rich IU, which attracted attention with changes to Eyebrow, as IU mentioned.
Meanwhile, IU will release its regular 5th album "LILAC (Lilac)" on the 25th.
About IU
Lee Ji-eun, also known by her stage name IU, is a South Korean singer-songwriter, record producer and actress. She signed with LOEN Entertainment in 2007 as a trainee and debuted as a singer at the age of fifteen with her first mini album Lost and Found.
 Wikipedia