Rainbow Chalk Markers Brilliant White Silicone Sealant Pen - Restores Silicone Sealant around Baths Showers Sinks Toilets - 7ml (White)

Really works!!

does what it says

Easy to use and covers really well. It is the consistency of tippex so quite liquid so don't need to press very hard to get a good flow. The nib is small enough to get into corners. Does a good job and dries quickly.

Not as good as advertised. Having to constantly shake it and depress the nib...thought it would be smoother.....hasn't covered anywhere near as much as I thought. So next time I will be removing old grout etc and replace it with fresh as found this a waste of money

This was so easy to use. I would recommend thoroughly cleaning the area first and letting it dry completely before using this. I’ve applied it once about six months ago and it’s still in place. Zero mess and quick to do.

The beading around the side of the bath is silicone. It was, like so many products, meant to be mould resistant, but has proven not to be. So this Sealant Pen looked like the perfect answer. Except, it isn't. It REALLY isn't. The instructions state that you need to shake the pen a few times, then press the nib to get the sealant going. Next, according to the instructions, you run the pen along without using pressure. Again, nonsense. Unless you apply a significant amount of pressure, the watery tippex stuff won't come out. The nib is yet another failure, in fact a total misnomer. Rather than applying the liquid, all the nib ever does is absorb the stuff back into the pen. So you give it another shake to try and get the stuff flowing, and then find out the lid has holes inside it. So when you shake the pen? Yep, the residual sealant flies everywhere. So completely contrary to the instructions, you have to force the nib back into the pen with extreme pressure to get any of the stuff out onto the silicone, then try to avoid letting the nib come into contact with the liquid so it doesn't disappear. Suffice to say, this process takes AGES.

Excellent product. But there is definitely a knack. You can't just run the pen along the sealant and expect it to work. The trick is to dab the pen multiple times along the sealant, pressing quite firmly so the nib depresses. That way plenty of the white stuff will come out. Let it dry for half an hour then repeat. The 2nd coat will go on much easier as it sticks to the 1st coat. After that, leave it to dry overnight. Great result, very happy.

I love the way it renews the silicone and grouting, but it doesn't last long if you clean lots like me. Also, if you go outside of the actual silicone, be sure to wipe it off immediately as it will stick there once dry!