Let’s be honest—cleaning the bathtub is one of those jobs most of us put off for way too long. It’s easy to ignore a little soap scum here and there until one day you walk into the bathroom and realize your tub looks like it survived a mud wrestling tournament. If your bathtub has reached that stage, don’t worry. You don’t need a dozen expensive cleaning products or a full Saturday afternoon to get it looking good again.

Recently, I tackled a bathtub that had built-up soap scum, hard water stains, and plenty of mystery grime that had been collecting for who-knows-how-long. Instead of trying every cleaning hack on the internet, I grabbed two simple tools that have become staples in my cleaning arsenal: Bar Keepers Friend Soft Cleanser and a Scrub Daddy sponge. Together, they make a surprisingly effective team for cutting through tough bathtub buildup without a ton of effort.
The nice thing about Bar Keepers Friend Soft Cleanser is that it’s already in liquid form, so there’s no mixing or mess. Just apply it directly to the dirty areas and let it start working on the grime. Pair that with the scrubbing power of a Scrub Daddy, and you’ll be amazed at how quickly years of soap residue and stains start disappearing. The sponge is firm enough to tackle tough spots but gentle enough that you don’t have to worry about scratching most bathtub surfaces.
What really impressed me was how little elbow grease was required. I expected to spend an hour scrubbing, but the combination of the cleanser and sponge did most of the heavy lifting. After a quick rinse, the bathtub looked dramatically better—cleaner, brighter, and honestly a lot newer than it had just a few minutes earlier. It’s one of those cleaning projects where the before-and-after difference is incredibly satisfying.
If you’d like to see the entire process from start to finish, check out the YouTube video below. I walk through exactly how I used Bar Keepers Friend Soft Cleanser and a Scrub Daddy to transform a really dirty bathtub in a surprisingly short amount of time. Sometimes the simplest cleaning solutions really are the best ones.
