Wet henna will dry in about 15 - 20 minutes.
Once dry, seal your henna in gauze or medical tape to avoid flake offs.
Or alternatively, you can spray lemon sealant (2 parts lemon + 1 part sugar) instead of the gauze.
Keep henna paste on for a minimum of 6 hours (overnight preferable).
Once time is up, chip henna off with a blunt knife or credit card (DO NOT WASH OFF WITH WATER!).
Apply balm (or coconut oil) on your fresh stain - which should be an orange color at this point.
After 30 mins, boil some water & apply your design on top of the steam (maintain a safe distance).
Your stain will peak and mature after 36 - 48 hours.