To use this Jelique nipple balm, just apply a generous amount to your nipples. During your intimate play, gently rub it onto the skin. Then, you can kiss, lick, and nibble to enhance the experience. You can reapply it whenever you want. As for precautions, although it's sugar - free, paraben - free, and vegan - friendly, it's always a good idea to do a small skin test first to make sure you don't have any allergic reactions. There's no special maintenance needed, just keep it in a cool and dry place. Enjoy your intimate moments with this fun and safe product!