The most important thing is the drying process. You should focus on drying the roots. To prevent the crown or side hair from flattening, it is best to turn your hair upside down and dry it by blowing air through it. For example, instead of blowing air from the top of the head downwards, tilt your head down and direct the air from the nape of the neck toward the crown. Drying your hair in the opposite direction of your usual parting can also be a good method.
It is also a good idea to use a hair essence or hair rollers to add volume. After applying the essence, wrap the hair rollers around the crown or sides of your head and secure them with hot air. However, you should not remove the rollers immediately after applying heat; instead, wait until the hair cools down before taking them out. This is because the hair becomes fixed as it cools.
Source https://post.naver.com/viewer/postView.naver?volumeNo=33329833&memberNo=54067778
