The color-enhancing sealers will typically last 2-3 years, with the shine and color-enhancement not lasting as long as the protective quality of the sealer.  The natural-appearance sealers will typically last 5 or more years.  A variety of factors influence the longevity of the sealer; sealer application, residential vs. commercial, sun exposure, environmental conditions, volume of traffic, frequency of cleaning and chemicals used.  We add the most advanced UV additive on the market to ensure longevity in the harshest environments.