Cleaning Tools
Grout Pen — Restore Dingy Tile Grout to Bright White, No Scrubbing
Trace it over grimy grout and watch the lines turn bright white.
The problem
You scrubbed for an hour. The grout still looks dirty.
It's not you. Grout is porous, so years of soap film, mildew and foot traffic soak into the lines — bleach and elbow grease only lift the surface. The tiles come up clean and the floor still reads grimy, because those grey, yellowed, blotchy lines are doing all the talking. And regrouting the whole room is a weekend, and a mess, nobody wants.
The fix
Color the grime away — no scrubbing, no regrouting
New-looking lines in minutes
Trace the pen along the grout and the dull, stained line turns bright and even on contact. A whole bathroom floor is an afternoon, not a weekend.
Waterproof & mildew-resistant
The ink cures to a water-tight finish that shrugs off splashes and steam, and helps keep mildew from staining the line again.
No mess, no contractor
No mixing, no grinding out old grout, no dust sheets. Just shake, prime the tip and draw — then recap and keep it for the next touch-up.
Three steps
How it works
Clean and dry the grout
Wipe the lines free of soap scum and grime and let them dry fully. The colorant grips bare, dry grout best — don't apply over a fresh sealer.
Prime the tip
Shake the pen, then press the nib down on a tile or paper towel a few times until the ink flows evenly.
Trace each line
Run the tip along the grout in one smooth pass, wiping any stray marks off the tile face before they dry. Let it cure and it's waterproof.
Love your grout again — or your money back
Give the Grout Pen 30 days. If your lines don't come up brighter, cleaner and more even, reach out for a full refund. Every order is backed by real human support.
The details
Specs & what's included
- Use on
- Wall & floor tile, backsplash, shower, kitchen & bath
- Tip
- Broad felt nib for standard grout lines
- Finish
- Waterproof, quick-dry, mildew-resistant
- Pen length
- Approx. 13.8 cm (5.4 in)
- Best on
- Clean, dry, unsealed grout
- In the box
- 5 × grout restorer pens
Good questions
Before you ask
Once it cures, the ink is waterproof and won't wash off with everyday use. Like every grout pen it's a refresh, not a permanent regrout — on floors and walls it can last a year or more, while inside a constantly wet shower it wears faster and may want an occasional touch-up. The good news: touch-ups take two minutes.
Yes — and it's the step that decides how well it lasts. Scrub the lines, rinse, and let them dry completely so the colorant bonds to bare grout. Avoid applying over a fresh sealer.
It covers discoloration and dark, set-in staining well. If there's active black mold, kill and clean it first — the pen colors grout, it doesn't treat mold — then trace over the clean, dry line.
Wipe stray marks off the glazed tile face with a damp cloth before they dry. The ink sits on top of smooth tile and lifts easily, while soaking into the porous grout exactly where you want it.
This pen restores grout to a clean, bright white — the most popular choice for refreshing dingy lines. Other shades (including grey, beige and a decorative gold) exist, so message us if you'd like a different color.
One pen refreshes the grout of a small bathroom or a backsplash. For a full floor or several rooms, grab a couple — capped, they store for ages.
Bright white grout, today
Trade grimy lines for crisp ones
Proof it works
What buyers say
"These pens made my old tiles look new. Much faster to use than I expected — we did 2 large rooms in a few hours."
"I'd smoked in the bathroom for years, so the tiles and grout looked quite brown. Bought these grout pens and was immediately impressed — easy to use, and now I've got white tiles and white grout again. Highly recommend."
"Very happy with the pens — used them in my bathroom and the tiles look like new!"
"Works great, very easy to use, and in my case the white lines came out fantastic."
"The tip easily paints a 1–2 mm gap, and if you smudge it you just wipe with a cloth. One pen covered well over 15 square meters with plenty to spare."
"The markers are simply superb — two were enough for the entire bathroom."