I didn't wear eyeliner or just shallow before, and I have been wearing very thick eye makeup since LD. Many people who were not familiar with Ji-yeon said that Park Ji Yeon would die if she didn't wear eyeliner, but it wasn't at all. Personally, I feel that it is better to wear light makeup before and at the beginning of my debut.
Another reason is that the hairstyle has changed. In the past, Ji Yan was a lovely oblique bangs or flat bangs, but now it is basically a middle bangs, and the whole person has matured a lot.