Before And After Wax Comparison Pictures Why Is It Harder To Wax After Shaving A Couple Times Before?

Why is it harder to wax after shaving a couple times before? - before and after wax comparison pictures

I shave, but I've heard that the wax was better than what I tried, but it was hard to do. Is it because the hair is thicker after shaving? And if I go to a spa, because it does not say if I shaved, "the State before?