Hard to answer, but they say 6 months........
What is amazing is the cost is VERY reasonable. You'd expect to pay more for this outcome.
One other thing the more you use this product the better the finish the deeper the shine. No reason to doubt them?
Just VERY,VERY hard to believe its gets better?
I'm sure other folks here could answer the longevity question. I'm guessing from the way it applies, and finish, it will be months.
RARELY, am I impressed. Hence, my response.
