Urban myths aside, the answer to this question is “no.” On average, human hair grows between ¼” – ½” per month.
While the rate of hair growth slows with age, haircuts and trims do not affect the rate of growth. The follicles in the scalp, health and genetics determine the speed at which hair grow, not the ends of each hair strand.
Split ends develop from the use of brushes, hair clips, rubber bands and hair ties and cannot be repaired. If damaged ends are not attended to, the split may travel up the hair shaft, making hair look thinner, shorter and not as lush.
By getting regular trims of about ¼” every 8 – 10 weeks, you’ll be able to stay ahead of the split ends and will actually see a net gain in hair length of about 4 ½” over the course of a year