This example is with a concrete paver. It was chosen because it illustrates more than one restoration goal and problem.

• It is concrete, therefore can be damaged by cleaning with muriatic acid.
• It is badly scuffed and scraped, therefore needed some surface restoration.
• It has crystalline efflorescence in addition to regular efflorescence.
• The color needs to be restored.

Before cleaning treatments This concrete paver shows efflorescence, crystalline efflorescence, and scuffing.
After cleaning treatments. Yes, this is the same piece! First - with "Grout Residue Remover" to remove crystalline efflorescence and scuff marks. Then - treated with "Efflorescence Treatment". Note how the color has been restored.	Grout Residue Remover        Efflorescence Treatment

You can keep the surface looking this way and not have to clean it again. The appropriate Aldon Sealer will stop future efflorescence as well as protect from staining.

Note about "Sand Stabilizers": If white looking stains do not respond to Aldon "Grout Residue Remover", this might not be efflorescence. Sometimes an installation might have a "sand stabilizer" mixed in with the sand. These are basically a glue type material. This glue can wash out and leave light colored smears on the pavers. Test lacquer thinner and/or Aldon Premium Stripper to remove this glue. When you seal with an Aldon sealer, choose one that will stabilize sand at the same time and you will get that stabilizing effect in a single step without the same risk.