We get asked often what the difference between our Pro Lemon polish and Pro Shine is. Along with this question we are usually asked if they are non-toxic. The answer to that is yes, they both are non-toxic :-). The Pro Lemon is an oil-based shine. It can be used to polish your guitar or piano, even your furniture, and condition your fret board. The Pro Shine guitar polish is special, as it will not lead to any wax build-up from continual usage. We suggest that you shake the guitar polish before applying. Both products offer the same high quality finish for your guitar; it is just a matter of personal preference for which one is chosen. Seeking a protective wax finish? Then try out our Carnauba wax as this product would be best for that :-).