Extensive research has shown that processed oils and waxes (most bore oils) actually clog the pores and fine structure of the wood fibers and hinder the transfer of moisture to the wood structure, while certain natural oils and antioxidants nourish and preserve the wood and the fine tonal qualities of wood instruments over the years. A proper water balance is necessary for the resonant qualities of wood instruments but too much or too little (and even the rapid flux ) can cause changes in resonance and the tendency to warp, split or crack the wood. Bore DoctorTM will not dull the tonal qualities of your instrument! Inexpensive insurance for your wood prone to cracking or splitting. This especially formulated, all natural blend of expensive non-toxic exotic oils, antioxidants, and stabilizers, controls the dimensional stability and water balance of fine wood instruments. It really, thoroughly soaks into the wood. Water is both the enemy and the friend of fine wood musical instruments and controlling the water sorption and description of (amount entering and leaving) the wood adds dimensional stability, retards the tendency to crack or split, prevents water logging, and improves the overall tone of the instrument. Your fine wood instrument should last many years with proper care. Especially good for dry environments - necessary for damp climates.