ZYMOL IS 100%WATERPROOF 100%PROTECTION 100% NATURAL...yes it seems pricey, but 1 pot of titanium is £60, thats about 40 applications, so if we put a layer on each month, that means the tubs gonna last about3 years plus! Thats cheap in my book! £1.50 per layer! Or concours at £130, which is even better, and thats £3.25 per layer!