These compounds are designed to co-ordinate with the cloth used in the Buffing Wheels and Dome Buffs to give an exceptional cut and prepare the surface to a very smooth finish prior to using wax.
Compound 1 -the brown one (sometimes referred to as tripoli) is used with the A Wheel/Dome to help smooth the applied finish. Avoid overloading the wheel/dome where possible to prevent a build up of the compound. If this happens it can be removed by either washing in soapy water or abrading the edge of the wheel with a coarse abrasive.
Do not use on very open grained light coloured timber as the compound can get lodged in the grain and colour the piece.
Compound 2 the white one (sometimes referred to as white diamond) acts as a cleanser to remove any traces of Compound 1 left on the surface (but not from the grain) and also has a very fine abrasive contained in it which smooths the work, leaving a semi-gloss finish and a superb foundation for the top coat of wax.
Use Compound 2 sparingly, too much on the wheel will result in smears on the surface of your work which can be removed with buffing but this can be very time consuming and frustrating. Its always best to apply a little and add more if needed.