Ella is talking about her hair care routine. Ella uses conditioner before getting in the shower and waits 20–30 minutes. Then she shampoos her hair twice. After that, she uses conditioner one more time.
Sungchan and Ella call this method the “sandwich hair care method.”
@kdramahotgists Its because when he's start answering one question "yup they'r fine,bla bla bla.. then the media will asking more and more and more.. they will twist and what ever is.. understand?