Lemon oil: Should I use it on my guitar fretboard and what are some good alternatives?

Can someone tell me what this is? And how do i fix it, i used lemon oil but it didnt help. : r/guitarlessons

NATURAL CLEANER & CONDITIONER - D'Addario Lemon Oil is a natural cleaner and conditioner formulated to remove dirt, grease, and build-up from

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what will happen if i put dunlop 02 or lemon oil on the fretboard of a wood binded rgew521fm? : r/Ibanez

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Can I use mustard oil to clean guitar fretboards? If no, which oil do I use and where do I find them? - Quora

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