How are loops used, how long should I leave them and all this ...?
To make your curls more firm, you should spray curling funnel on your hair (which is usually only available to people who do curling).
Then you put the hair in the looper, place it where the styler is and remove it, it depends on the quality and temperature of your looper. For professionals with more than 30 silk fabrics, the humidity of the day depends on your hair. You will see it from experience ...
PS You can also confirm this by spraying on the hex.
Take a mace and twist the hair into a circle, hold for 30 seconds, then leave it on for longer. You can use spray
When you get out and twist the lock of hair, wait for the base silk and slowly release it. If your hair is straight, apply it to make it last longer! :) Good luck