At PostalAnnex+ in Long Beach, we take professional US passport photos, accepted by passport processing agencies. Most stores accept walk-in's, so no appointment is needed, but call the phone number at the top of the screen for your passport photo needs.
This silver sulphide tarnish can be quite easily removed using polishes that contain abrasives to rub off the silver sulphide, but these have the disadvantage of also removing small amounts of silver. Handily, chemistry provides a method which sidesteps this problem.
The oxalic acid is an ideal chemical for cleaning purposes. Its bleach-like qualities make it perfect for sterilizing household items. It is also efficient in removing rust on various different surfaces. Stains on counters, bathtubs and kitchen sinks can be removed through careful application of this chemical.