This oil, the Dunlop Lemon Oil, is a very versatile oil and lasts long. It gives the fretboard and saddle a beautiful satin look.
Taking off the lit there is no direct acces to the oil. In the bottle opening is a sponge, and by turning the bottle upside down, and pressing it to the fretboard, the oil comes out in a proper amount. Then wipe out the oil, let it sit for a while, and wipe off again.
Good luck with your guitar maintenance.
Kind regards
Finn Høj
Denmark