Boogie Juice can effectively remove dirt and build up from your Lowden fingerboard.
The dispenser has a tip operated valve. To start flow, hold upright and depress tip 10-12 times onto the fingerboard. When more liquid is required, depress 2-3 times. Rub tip gently on fingerboard to loosen dirt. By using this regularly your Lowden fingerboard will stay conditioned and free of build up.