Detailers Clay Lubricant:
The critical safety factor is adequate lubrication; most clay retailers supply their detailing spray (QD) as a lubricant, the problem with many of them is that they contain some form of solvent or alcohol, which may cause the clay to dry out. To provide sufficient lubrication the surface must be thoroughly saturated, problem is that a solvent dries out the clay, which could cause surface marring or cause it to disintegrate, or breakdown and become soft leaving streaks on the paint surface.
Some car wash concentrates will also cause some of the same problems due to the synthetics, detergents and / or solvents used.
To ensure adequate surface lubrication and avoid surface marring use a product (Optimum No Rinse (ONR) - that contains a surfactant to ensure that any dirt/grit / metal debris is encapsulated and held in suspension and can be rinsed away
The best way to describe the proper method for using detailer clay is to use plenty of the lubricant and aquaplane the clay bar over the surface in straight-line motions. A mild liquid soap (Woolite™) works as a lubricant and is gentle enough that it will not adversely affect either the clay, vehicle paint or trim using a 5:1 solution of distilled water / Woolite™. As an alternative use a 16:1 solution of distilled water and a pH suitable car wash concentrate (Zaino Z-7 Show Car Wash, pH7.0) in a 16 ounce spray bottle, a lubricant made for clay Zymol Lehm-Lube 2 as it contains glycerine