Not sure how this works on all surfaces but works great on my tub and shower walls please test a small area first.
Don't waste your money on EASY OFF BAM it doesn't work that well.Â
Use Easy off oven cleaner to clean soap scum off your bathtub. Spray on then let set for about 5-10 minutes. Then use a sponge or scrubber to wipe off. Soap scum comes off with little effort.