Auto Finesse Imperial is available in two forms; a pre-diluted ready to use option (10:1, water:product) and a full strength concentrate. Note that the concentrate must be diluted to an appropriate strength in a suitable spray bottle or pressure sprayer before use. For routine cleaning, a dilution ratio of 10:1 (water:product) is usually sufficient, but this can be reduced to 4:1 or even 2:1 for tackling really neglected wheels. In all cases, an appropriately diluted solution should be sprayed on directly and then agitated thoroughly using suitable brushes and/or a microfibre wash mitt (ideal choices include the Microfiber Madness Incredibrush, Braun Automotive Wheel Woolies and the Microfiber Madness Incrediflair). This will produce a rich foaming lather, which will quickly discolour as brake dust and road grime is progressively released. Accordingly, it is sensible to rinse out your brushes and/or wash mitt regularly during this process, otherwise there is risk of marring or even scratching your rims. The lather should then be rinsed away thoroughly and the wheels then dried fully before any rim protection or tyre dressing is applied.