It depends on the stain and the bathtub composition. My go to would be Mr. Clean Magic Eraser. You might need to add something to that like vinegar, baking soda, or hydrogen peroxide.
You might try contacting a Norwex representative if the eraser doesn't work.
If it's not marble, I would also recommend a no-scrub product "wet & forget shower".
Thank you for your reply to my tub stain question.
try Coke a cola
what color is the stain and where is it?
Thank you for your tip. My stain is hair dye, brown and near the drain. Others have suggested "Easy Off" oven cleaner. I'll try just a little of it to be sure I am not ruining the whole tube.
Hi. Typically tubs don't stain unless it's rust or some other mineral. You can actually try a toilet bowl gel cleaner for rust and hard water stains. If that does not remove the stains, if the tub is old the porcelain may have worn thin and your are seeing the metal. If that's the case, consider re-doing the tub with an epoxy paint. Happy DIY'ing.
I have no answer, only another question. I have a hair dye stain on my plastic tub. Now what do I do?
Easy Off No Fume oven cleaner in the BLUE can. Works on enamel, porcelain, and fiberglass.
I just saw this post and thought of you.https://www.hometalk.com/22372615/quick-n-easy-non-toxic-diy-cleaner-to-make-your-faucet-sparkle-agaiScroll to the end and see the sink tub.