How to Remove Soap Scum From a Shower and Tub

That Cleaning Girl · Deep Cleaning

Soap scum is that dull, filmy layer that makes a shower look dirty even right after you've rinsed it. It doesn't come off with water, and regular spray cleaners often just slide over it. After the grout work in How to Deep Clean Grout and Make Tile Look New Again, soap scum is the next layer to tackle in the shower.

What soap scum actually is

Soap scum is what happens when bar soap and body wash react with the minerals in your water. The result is a waxy, chalky film that sticks to tile, glass, fiberglass and acrylic. It traps dirt, body oils and dead skin cells, and over time it turns gray or yellow. Hard water makes it worse, and the water in much of North Texas is plenty hard.

The good news is that soap scum is mostly alkaline and greasy, which means a combination of degreaser and mild acid breaks it down without much scrubbing.

Check your surface first

Different shower surfaces need different care:

• Ceramic and porcelain tile: tough; most cleaners are fine.
• Fiberglass and acrylic tubs and surrounds: scratch easily; use soft cloths and non-scratch pads only.
• Glass doors: tough glass, but the frames and seals are more delicate.
• Natural stone: no vinegar or acidic cleaners; use a stone-safe cleaner.
• Enameled cast iron tubs: avoid harsh abrasives that dull the shine.

The vinegar and dish soap method

This is the method we come back to again and again. It's simple, cheap and works on most surfaces.

• Warm a cup of white vinegar in the microwave until it's warm, not boiling.
• Pour it into a spray bottle and add an equal amount of degreasing dish soap.
• Gently swirl to mix, so it doesn't foam up.
• Spray the shower walls, tub and door generously.
• Let it sit for at least thirty minutes; longer for heavy buildup.
• Scrub with a non-scratch pad or a soft brush, then rinse thoroughly.

The dish soap clings and cuts the greasy part, and the vinegar dissolves the minerals. Together they do most of the work for you. Rinse very well, because dish soap left behind leaves a slippery film. Be careful standing in the tub while you rinse; soapy fiberglass is slick. A handheld shower wand or a big plastic cup makes rinsing high walls easier.

Baking soda for tough spots

On textured tubs and stubborn patches, sprinkle baking soda on a damp non-scratch pad and scrub gently. The fine grit gets into the texture and lifts scum the spray didn't reach. It's a good match for the non-slip bumps at the bottom of many tubs, which collect scum faster than anywhere else.

For glass doors with a thick layer, a few passes may be needed. Spray, wait, scrub and rinse, then look at the glass from an angle with the light behind it. Any dull patches still have scum on them. Hit those spots again rather than re-cleaning the whole door. Working this way keeps a big job from turning into an all-afternoon project, and it saves your arms for the rest of the bathroom.

Don't forget the hidden spots

Soap scum loves places you don't look:

• The bottom track and frame of glass doors.
• Behind and under the shampoo caddy and soap dish.
• The corners where walls meet the tub.
• The underside of the tub ledge.
• The shower curtain liner, which can usually go in the washing machine.

Rinse and dry

Once you've scrubbed, rinse every surface with warm water, top to bottom. Then dry it. A squeegee on the walls and glass, and a microfiber cloth on the fixtures, keep fresh water spots from forming right away. That step is what makes a just-cleaned shower look professionally done instead of streaky. Pay extra attention to the fixtures; chrome and brushed nickel show water spots almost as soon as they dry.

Preventing soap scum

Soap scum always comes back eventually, but you can slow it down a lot:

• Switch from bar soap to a liquid body wash, which tends to leave less residue.
• Squeegee the walls and glass after showering.
• Run the exhaust fan during and after every shower.
• Give the walls a quick spray and rinse once a week.
• Leave the shower door or curtain open after use so it dries faster.

A water softener helps too, if that's ever on your list. Homes on hard water across Ellis County and south Dallas County see buildup faster than homes on softened water, and the difference shows up in the shower first.

Shower caddies and bath toys need attention too. Take them out, soak them in warm soapy water and let them dry completely. Scum and mildew grow on them just as fast as on the walls, and they're easy to overlook.

Keep it simple

Soap scum isn't hard to remove once you know that time does most of the work. Spray, wait, scrub lightly, rinse and dry. Do it every few weeks and the shower never gets to the point of needing a hard scrub. If yours already has, our deep cleaning services will get it back to clean.