Bathroom floor had gone grey and no amount of scrubbing touched it. The dwell time on the cleaner is what made the difference — I'd been scrubbing wrong for years.
Make the grout look new without ripping it out.
Oxygen cleaner lifts the staining, colourant evens it out, sealer stops it coming back. For grout that's discoloured but still solid.
Free US shipping · dispatched within one business day
90 days to change your mind. If it doesn't work on your grout, send a photo and we refund you. Keep the kit — posting it back costs more than it's worth to us.
An afternoon
Clean, dry, colour, seal. Most of the time is the grout drying, not you working.
No demolition
Nothing gets ground out. No dust sheets, no chipped tile edges, no skip.
Sealed, not just painted
The sealer is what stops it going grey again. It's the step most people skip.
Test before committing
Shade card and a hidden-patch test first. Nothing visible gets touched until it matches.
Will it work on your grout?
Press the grout firmly with the back of a spoon. What happens tells you which fix you need — and two of these aren't this kit.
Restore it, or pay someone to replace it.
- Shower usable next morning
- No dust, no contractor in the house
- Refundable if it doesn't hold
- Grinding dust through the house
- Bathroom out of use for days
- New grout goes grey too, unsealed
How it goes
The only thing that catches people out is rushing the drying.
Strip, don't scrub
Oxygen cleaner, left to dwell so it lifts staining out of the pores rather than off the surface.
20 minutesLet it dry
Longer than looks necessary. Colourant on damp grout won't bond. Overnight is the safe answer.
OvernightColour the joints
Work a square metre at a time, overrun onto the tile, wipe back before it sets. Faster than chasing a line.
45 minutesSeal it
After the colourant cures. This is the step that decides whether you're doing this again next year.
20 minutesWhat people said after using it
We've shipped 31 kits. That's the real number — there's no wall of reviews here because we haven't earned one yet. Everything we've had back is below, including the one that didn't work.
Took two coats on the shower wall rather than one, and I ran out doing the floor as well. Get the large if you're doing both. Looks right though.
My grout was crumbling and I didn't check first — colourant lifted within a fortnight because there was nothing solid underneath. My mistake, but the refund was processed in two days with no argument.
What's in the box
- Oxygen grout cleaner500 ml
- Grout colourantShade of your choice
- Penetrating sealer250 ml
- Stiff nylon brushIncluded
- Applicator and shade cardIncluded
- Printed instructionsIncluded
- Covers approximately40 sq ft
Questions people ask
How do I know if my grout is solid enough?
Press it firmly with the back of a spoon. If nothing happens, you're fine. If it powders or crumbles away, it's failed through and needs regrouting instead — don't buy this.
Will the shade match my existing grout?
Use the shade card against your tile in daylight, then test on a hidden section. Grout looks different wet and dry, so let the test patch dry fully before deciding.
Can I use the shower the same day?
No. Give the colourant its full cure time before sealing, then let the sealer set. Next morning is realistic; check the printed times in the box.
Does it work on the silicone seal too?
No. The bead where the wall meets the floor or bath is silicone, not grout, and nothing bonds to it. If that's black, it needs cutting out and replacing.
How long before I need to do it again?
Sealed properly and cleaned with pH-neutral products, years. Acidic cleaners like vinegar strip the sealer and shorten it considerably.