How do I get bathtub clean without bleach?

heat on cup of white vinegar, mix in 3-4 tabls. of Dawn Ultra or Dawn Platinum. Let cool. Put in a spray bottle, add water to top. Spray the tub and let it stay for at least an hour. Then rinse with a good sponge, Your tub will shine, This is also good on a daily spray for toilets.

Gel Gloss is made to make old tubs clean and shine..... https://www.amazon.com/s/ref=nb_sb_ss_c_1_9?url=search-alias%3Dtools&field-keywords=gel+gloss+cleaner+and+polish&sprefix=Gel+Gloss%2Ctools%2C292&crid=20OH8BNVMFVLR or you can get some Maguires Auto Wax the carnuba kind and polish it.... just be careful as it can make it slippery...... so make sure you have a bath mat or non skid strips on the bottom.

A shimmer and shine with baking soda,and a little white vinegar and a tablespoon of salt .Rinse well after a short scrub. This leaves all shine use on tubs,sinks ,toilets ,not only clean all odors are gone,and for any mildew use baking soda and peroxide,both together let sit 10 minutes after a scrub and then wipe away. For all whom rather a scent use a drop of lemon oil or lavender oil,I love lilac oil. Put it on your scrub cloth while scrubbing,leaves the room very refreshing........D

I love soft scrub applied with a scrubby sponge! It took off years of soap scum build up and if left on the surface after scrubbing, will definitely brighten the surface. Once rinsed, it left a nice clean shine.

Here' a post that might help https://chascrazycreations.com/clean-bathroom-natural-products/