“Shaving makes your hair grow back thicker, darker, or faster.”

The notion that removing hair with a razor causes it to return thicker, darker, or at an accelerated rate is a widely believed, age-old misconception. This myth has been passed down through generations, influencing many people's grooming habits. However, scientific evidence consistently debunks this persistent claim.

Hair growth is governed by the follicles located beneath the skin's surface, which are living structures that determine the hair's color, thickness, and growth rate. When you shave, you are merely cutting the dead portion of the hair shaft above the skin. This action has no impact on the hair follicle itself, nor does it alter the genetic programming that dictates hair characteristics. Studies as far back as 1928 have confirmed that shaving does not change the nature of hair regrowth.

The illusion of thicker, darker, or faster growth stems from several perceptual factors. When a razor cuts hair, it creates a blunt tip, unlike the naturally tapered end of hair that has grown undisturbed. As this blunt hair emerges, it can feel coarser, stubblier, or stiffer, giving the impression of increased thickness. Additionally, freshly regrown hair has not been exposed to sunlight or other elements that can naturally lighten hair tips over time, making it appear darker against the skin. Many individuals also begin shaving around puberty, a period when hormonal changes naturally cause body hair to become thicker and darker, further reinforcing the false association.