How many visits will it take to obtain complete body hair removal?

So over the last 23 years I have done laser hair removal, almost using the early primitive machines that i remember we had to spread on the skin a black cream to be effective. The technology has come to be much better, more effective and for sure less painful. The truth is major reduction of hair is a safer promise as few hairs will grow back years late but mostly will be thin faint and soft. Full body hair removal also may vary by location and machine since you may spend days in the room vs hours.