Actually this is a pretty common misconception. But actually shaving hair doesn't affect its rate of growth. Shaving hair removes a thinner part of the shaft, leaving behind its thicker base. As it grows, the follicle thins from wear — but seems thicker-than-normal at first. This thicker part of a hair follicle's shaft is the first to emerge from shaved skin, giving the appearance and feel of thicker-growing hair. Yet this thick base naturally wears down into a thinner tip over time as the hair continues to grow. (See the attached picture)
