Unibond Grout Reviver Pen, White Grout Pen for Bathroom Grout Joints, Easy to Use Tile Grout Pen, Whitener for Restoring Discoloured & Faded Joints, 1x7ml

Best grout pen I've tried. Nib stays in shape and lovely, bright white finish to grout really freshens up old tiling. Easy to use.

Pleased with this, easy to use and works well

Old looking, discoloured grouts are white again. The pen is easy to use, compact (in fact, you might misplace it easily). Make sure the grout is clean, moudless and dry first. I cleaned it with some grout cleaner and the dried for a while as well as with a blow dryer to be sure. Just shake it, prime it by pushing it on some cardboard and then gently go over the grout, one even stroke. I did not really press, I coloured the grout and it came out clean, white with not leaks. The tip is not thick and the liquid flows nice and consistent. I couldn't believe it, after all the products I had tried, this one worked. It says to repeat after an hour, but my first pass was already fine. Amazing little product.

The UniBond Grout Reviver Pen is a simple and easy-to-use product designed to refresh discolored grout, giving tiled surfaces a cleaner and brighter look. While it’s a handy tool for minor touch-ups, it may not be a long-term solution for heavily stained or deteriorated grout. Pros: ✅ Quick and Easy Application – The pen-style design makes it convenient to apply without the mess of traditional grout. ✅ Instant Brightening Effect – Works well on lightly stained or faded grout, providing a whiter and fresher appearance. ✅ No Strong Odor – Unlike some grout paints or sealers, this pen has minimal odor, making it more pleasant to use indoors. Cons: ❌ Not Ideal for Deep Stains or Heavy Wear – While effective for surface-level discoloration, it may not fully cover deeper stains or fix cracked/damaged grout. ❌ May Require Multiple Coats – Depending on the grout’s condition, more than one application may be needed for an even finish. ❌ Durability Varies – The effect is not long-lasting in high-moisture areas like showers, where it can fade over time. Verdict: A Handy Touch-Up Tool, but Not a Permanent Fix The UniBond Grout Reviver Pen is a useful, budget-friendly option for quickly refreshing grout in kitchens and bathrooms. However, for deep stains, worn-out grout, or long-term results, re-grouting or using a more durable grout paint might be a better choice. ⭐⭐⭐ (3/5) – Good for quick fixes, but not a lasting solution for heavily stained grout.

I don't normally write reviews but this was genuinelly worth a review. Totally transformed the look of my bathroom. One coat was enough for most of the black areas and all were white by the second coat. Great stuff would recommend.

Really simple to use and done a brilliant job!

Pointless. No paint comes out unless you push down on the nib. If you push down on it the nib it frays out and becomes fairly useless. Couldn’t use it after a couple of meters. I would say it was a waste of money but it’s given me an opportunity to rant about something mundane.

There are many negative comments (1* and 2* reviews) on the Amazon website but if used carefully, this is a good product. I Bought this pen a few weeks ago. After less than a dozen tiles the tip frayed and the pen became unusable. I called Unibond to "complain" and they kindly sent me a replacement. Using the replacement, I was much more careful how I used it and the results were very good. Here are my "tips" for a good result: 1. Shake the pen vigorously when first removed from the packaging. 2. Press tip CAREFULLY on a non abrasive surface for a few seconds to allow the fluid to flow (I used an old tile off-cut). 3. Apply the tip to the grouting GENTLY and at an angle - rather like drawing a line. DO NOT PRESS HARD on the grouting as this will cause the tip to fray! Turning the pen slowly as the fluid is applied will help to preserve the tip. 4. Shake the pen frequently every 2-3 tiles and repeat 2 & 3 above until the job is complete. I have now "revived" all the tiles in my bathroom and shower and the grouting looks great! As I have said, a good product if used carefully. If Unibond read this, I suggest better instructions could be provided!

Para cubrir juntas muy oscuras hay que dar varas pasadas pero va muy bien lo unico que no es muy duradero..osea que da para pocos metros

Did the work.

Easy to use BUT the pen tip wears out fast

Before using make sure to follow instructions. Initially nib would be dry, you need to press against a hard surface, so that the nib goes in breaking the seal and the white paint fills up the nib and then you can start using it. Everytime you feel the nib is dry you need to repeat this step. 7ml is less and costly. Maybe better to buy a white paint and a small brush and repaint the Grout.

I went over some grout lines which now look so much better.