All the major manufacturers of soldering tips have one thing in common, they all recommend that you "tin your soldering tips". IC "lead-free" tip tinner has been formulated to prolong soldering tip life in the harsh environment of no-clean & water soluble fluxes. - The R&R Lotion's tip tinner for use with soldering iron tips. No halides. Residue free. Rosin free. Environmentally safe.