How do you store left over henna paste?

To store leftover henna paste, place it in an airtight container to prevent it from drying out. Refrigerate the container if you plan to use it within a week; for longer storage, you can freeze the paste in small portions. When you're ready to use it again, thaw the frozen paste in the refrigerator and mix it well before application. Always check for any changes in smell or texture before using stored henna.