The idea that trimming your ends often can make your hair grow faster is oddly appealing. It's nice to have control over such things. Unfortunately, it's not true.
Hair is not alive -- it's dead skin cells. Cutting off the ends doesn't speed up the hair-growth process. It makes your hair shorter. But getting rid of split ends can also make your hair look a lot healthier and give it some extra bounce.
As far as growth goes, the average rate is 1/2 inch per month, and no number of regular salon visits will change that. Hormonal changes, however -- seasonal or pregnancy-related -- can affect the speed of growth.
Up next: It's simple math. Hair math.