"Use product as soon as possible when wet to obtain quicker/better results. Use one or more times depending on the nature of the task or the surface to be cleaned."
In addition to instructions, other writing on the package:
Rub lightly without detergent to eliminate even stubborn stains: Dried stains including tea, pen or pencil marks, limestone traces, dirt clogged tiles.
Spontex Rub Out may scratch delicate and painted surfaces. Test first on an inconspicuous area. Do not use on polished/glossy or delicate surfaces. This product may not be as effective on older stains.