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I have very dark almost black imprint and I hate it ,can i make it lighter
Yes it is possible to make dark paving light,
First you would need to remove the sealer from the surface using the Easy strip (link below).
Once this has been done you need to jet wash the surface, then, when dry apply the Eco acid solution to profile the surface to ensure it is porous enough for the stain to soak in, there is a video on the website explaining this,
Next when it is dry (90% dry is fine) you can apply the Solid colour stain using the applicator brush following the instructions (included in the box and there is a video on the site).
If you are happy with the colour you can stop there.
If you want the 2 tone/antiqued effect of imprint concrete you can achieve this by using a darker Smartcolour diluted to 1:6 with water, all you have to do is spray an even coat all over the surface, then as it dries it will settle in the deeper areas to create the effect, as it is drying, if you think it is still to dark on the main surface, misting water over the surface will make more of the colour run off the high spots.
Once it has all dried (ideally 24hrs+) you will need to seal the drive using either the WB25 or WB34.