Did you reach out to our customer service department before sending the product back to us?
If not, we are likely to not know of the return.
Please communicate with us via our customer service line when you are able as customer satisfaction is very important to us.
The best way to determine if you are dealing with efflorescence is with a simple splash test.
Just splash a bit of water on the stain and look for it to turn transparent when wet.
Efflorescence turns invisible when wet since it is a mineral salt deposit.
If the stain retains its color but the surface around it is darkened, it is likely another type of mineral stain and would require a different cleaner.
If the stain retained its color and the water beaded on the surface, the stain is likely under a sealer.
If it is under a sealer, you would need to remove the sealer before applying Restore-n-Prep.
Cleaning efflorescence is a semi-complicated process.
You would start by lightly misting the surface with water.
Then, you would saturate the stain with Restore-n-Prep.
Let it dwell for 5-8 minutes (keeping it wet with Restore-n-Prep), and then rinse with a pressure washer or high-pressure spray nozzle on your garden hose.
Then, let the area reach a full dry to determine how much, if any of the stain remains to be cleaned.
Repeat as needed until the stain no longer reappears.
For further assistance, please contact our customer service representatives.
“I attempted to use this to remove effloresence on stone on the outside of my house. Unfortunately, it seemed to have no effect on the stone, if anything it made the white / yellow color even brighter on the stone.”
The best way to determine if you are dealing with efflorescence is with a simple splash test.
Just splash a bit of water on the stain and look for it to turn transparent when wet.
If the stain retains its color but the surface around it is darkened, it is likely another type of mineral stain and would require a different cleaner.
If the stain retained its color and the water beaded on the surface, the stain is likely under a sealer.
Based on your results, it sounds like you may have a failing, oil-based sealer on the surface which prevented our Restore-n-Prep from coming into contact with the mineral stain.
Our product would then sit on the sealer and begin to break it down.
This would explain the "stain" gaining more color as it becomes weaker, clouds, and begins to lose adhesion.
Please feel free to reach out to our customer support reps for further assistance.
