F-ONE from Music Nomad is formulated using a complex mixture of the finest ultra refined tree and seed oils to clean, condition and protect your fretboard/fingerboard. 100% free of any lemon oil extracts, waxes, petroleum distillates, silicone and water. No lemon oil because it contains d-limonene, which is a strong solvent that is used to remove paint and glue. In addition, the high acidity levels of lemon oil can dry out the fretboard over time and require more frequent fretboard care. F-ONE leaves your fretboard looking new, playing great and feeling smooth, never sticky or tacky. The revolutionary formula penetrates and conditions the wood to dry fast and give it a fresh look for months. It's made of 100% naturally produced oils and is safe on all unfinished rosewood, ebony and maple fretboards.