How to Remove Soap Scum

Stacks of Soap and How to Clean Soap Scum.

How to Clean and Remove Soap Scum.

Soap Scum Cleaning Tips

Soap scum is a combination of minerals in the water and body oils combined with bar soap that many of us use. It is the film left behind once we are finished showering or bathing. It’s a dirty gray film left in the bathtub or shower that builds up over time. How to remove soap scum in the bathroom can be a real challenge if not tackled immediately. It really isn’t something to be ignored or it’s just going to get worse.

How to Remove Soap Scum

Usually, with regular upkeep, soap scum will just wipe away. But let’s be honest – life gets busy, and cleaning slips down the list. (I assume that’s why you’re here, right?)

Soap scum builds up like concrete when left unchecked. It clings to walls, tubs, shower curtains, and even under bottles of shampoo, leaving behind a dull, grimy film.

When this happens, maintenance becomes much harder. But don’t worry – you’ve got options.

Safe DIY Soap Scum Removers

There are plenty of effective, budget-friendly ways to fight soap scum using items you probably already have around the house.

Soap scum can be really stubborn. If one cleaner doesn’t work, don’t give up – just try the next one. And always rinse thoroughly before switching to another cleaner.

Borax

Borax is a natural scouring powder that works well without harsh chemicals.

Sprinkle some on a damp sponge and scrub in circular motions.
Rinse thoroughly.

Baking Soda

Baking soda is a non-toxic abrasive that’s great for tubs, tiles, and drains.

Sprinkle with a bit of water and scrub in circles.
Rinse well.

Tip: Follow with a cup of white vinegar down the drain to clean it out, too.

White Vinegar + Dish Soap

Classic, effective, and natural.
Spray full-strength white vinegar with a couple of drops of dish soap on the soap scum.
Lightly rub to spread the mixture.
Let it sit for 10 – 15 minutes.
Scrub and rinse clean.

Powdered Laundry Detergent (Without Bleach)

Works well as a gentle abrasive.
Mix equal parts detergent and water into a paste.
Apply to the affected area, wait 15 minutes, then scrub in circles.
Rinse thoroughly.

Preventing Soap Scum

To avoid future soap scum buildup, try incorporating some simple post-shower habits.

Switch to Liquid Soap

Bar soap contributes to soap scum; liquid soap leaves less residue.
A small switch with a big payoff!

Use a Squeegee After Showers

Using a squeegee is quick and easy – just swipe shower walls and doors to keep water and soap from drying into scum.
This will also help prevent water spots.

Epsom Salt (Anecdotal Tip)

Add to bathwater to potentially reduce scum buildup.
Not scientifically proven, but many say it helps.
It is soothing for sore muscles though!

Use with Caution Soap Scum Cleaning Methods

These soap scum cleaning methods can be effective and many websites claim these work but they are not intended for bathroom use and may pose safety risks. If you chose to try any of these, proceed with care.

Lemon Oil (Furniture Polish)

Lemon oil may clean and help prevent future buildup.
Apply then wipe with a soft cloth.
Warning: This can leave surfaces dangerously slippery. Use only on vertical surfaces – never on floors or tubs.

Spray and Wash™ (Laundry Stain Remover)

Some people claim Spray and Wash works for soap scum.
Spray on, leave for 15 minutes, and rinse well.
Warning: This is not designed for bathroom surfaces. May leave residue or affect finishes. Test in an inconspicuous spot first.

Ammonia

Strong and effective on tough buildup.
Mix 1/2 cup with 1 gallon of water, spray on the area, wait 5 minutes, scrub, and rinse.

Use Ammonia with care:

Always wear gloves and ventilate the space.
Warning: Never mix with bleach or bleach-containing products – this produces toxic fumes.

Baby Oil

Baby Oil can be rubbed on shower doors to repel scum.
Warning: This is very slippery. Use only on glass doors – never on floors or areas where people walk.

Car Wax

Helps water bead and run off vertical surfaces, reducing buildup.
Needs reapplying every 6 months.
Warning: Use only on shower walls or glass doors. Do not use on shower floors – it can make them dangerously slick.

Rain-X™ (Glass Treatment)

Rain-X is designed to repel water, it can work on glass shower doors and curtains.
Caution: Another product that is not intended for bathroom use. Overtime it can cause streaking or surface damage – test on a small area first.