Ok, just make sure it does not have anything abrasive in it as you will inadvertently scrub the finish off the tiles. I use baking soda and vinegar. Here are other options.
you need to clean them really well then use a cleaner for tile floors -most bathroom cleaners have chemicals in them that will dull the floors here are ideas
May 8, 2014 - Restore the shine of your ceramic tiles first by vacuuming up all the dirt, grime, and dust. In a bucket, add one gallon of warm water and mix in one tablespoon of rubbing alcohol. Dunk your mop in the solution, and squeeze it out until your mop is damp. How to Increase Gloss on a Glazed Tile Floor | Home Guides | SF Gate
You can restore -- and even increase -- the shine on your tile floor without ... Apply the cleaning fluid to the tiles, using a soft cloth or a non-scratch pad. ... Repeat Step 3 as many times as necessary to obtainthe degree of shine you desire, ...
Every time I clean my mirrors, they end up having tons of streaks and almost look worse than before I started. What could I use to clean them that won't leave streaks...
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Here's a couple of websites for you they have ideas
https://www.hunker.com/12458313/how-to-restore-shine-to-shower-tile
https://homeguides.sfgate.com/clean-restore-shine-bathroom-tiles-91360.html
How have you been cleaning them?
you need to clean them really well then use a cleaner for tile floors -most bathroom cleaners have chemicals in them that will dull the floors here are ideas
Floor Cleaning 101: How to Bring Back the Shine to Dull Floors ...
May 8, 2014 - Restore the shine of your ceramic tiles first by vacuuming up all the dirt, grime, and dust. In a bucket, add one gallon of warm water and mix in one tablespoon of rubbing alcohol. Dunk your mop in the solution, and squeeze it out until your mop is damp. How to Increase Gloss on a Glazed Tile Floor | Home Guides | SF Gate
You can restore -- and even increase -- the shine on your tile floor without ... Apply the cleaning fluid to the tiles, using a soft cloth or a non-scratch pad. ... Repeat Step 3 as many times as necessary to obtainthe degree of shine you desire, ...
Once and Done for tile is an excellent cleaner
I read this answer to a similar question yesterday
''Wet And forget it. Spray after your shower, rinse the next day and it sparkles.''