To keep me looking my best, simply wipe away any dirt with a damp cloth.
If the metal frame starts to squeak (it can happen with new frames after some opening and closing), just apply a small amount of oil—WD-40 works well, or even a bit of any kitchen oil. Use a cotton bud to apply it sparingly, and the movement will smooth out. This is usually only needed once or twice as the frame adjusts to regular use.
If the small pin ever slips out (the one that holes the two sides of the frames together), you can slide it back into place. If it goes missing, don’t worry, there are two spare pins in the gift bag inside your bag.
With a little care, I’ll last for many years to come. Designed to be used, loved, and kept.