If you keep to strict sun avoidance and used a good anti-aging skin protocol regularly, the results are very long lasting. If you continue to go in the sun and not use correct skin products, the results can be short-lived. Remember that Fraxel can take off a few years, but the clock continues to tick, so even the best of patients often want to spruce up the skin in 3-5 years with another course as they continue to age and need more help fighting Mother Nature.