Formula No. 1: General purpose cleaner - designed for complete cleaning, getting what iso misses. Thick oil deposits will still go faster with a bit of solvent, but F1 is designed to separate everything from the surface.
Formula No. 3: Hard water stain treatment
Restoration Kit: Includes Formula No. 1 (Cleaner), Formula No. 3 (Hard water treatment), Formula No. 6 (Glass Restoration), Funnels, Stoppers