You've put a lot of care into choosing your furnishings. And with continued care at home, they should share your address for many years to come. Now for your owner's manual...
Dust with soft dry cloth.
Clean glass (or mirror) with glass cleaner & soft lint-free cloth.
This floor mirror is not meant to be hung on the wall.
Natural teak oils rise from the surface, mixing with sanded
particles and can create what looks like dust/residue.
This is a natural characteristic of reclaimed teak wood.
All pieces should be wiped down before use.