I feel that consistent habits are more important than any special secret to making your hair shiny.
First, when washing your hair, avoid using water that is too hot and finish with lukewarm water. This will help to reduce damage to the cuticles and make your hair shine.
After shampooing, gently pressing the water out with a towel rather than rubbing it hard makes a bigger difference than you might think.
Even when using a hair dryer, if you finish with cool air while leaving a little moisture in your hair rather than drying it completely, your hair will look more neat.
If you use treatments or hair packs regularly, your hair will become less frizzy and feel soft to the touch.
Applying a small amount of oil here will add a natural shine without being excessive, making your overall impression look calm.
In the end, I realized that small daily maintenance adds up to create healthy hair.