“Shaving hair causes it to grow back thicker and darker than before.”

No — shaving hair doesn't change its thickness, color or rate of growth. Shaving facial or body hair gives the hair a blunt tip. The tip might feel coarse or "stubbly" for a time as it grows out. During this phase, the hair might be more noticeable and perhaps appear darker or thicker.

Science has weighed in on this repeatedly, and the consensus is clear: shaving does not alter hair thickness, color, or growth rate. Dermatological research, including a notable study from the 1920s that compared shaved and unshaved legs, found no significant differences in hair thickness or growth speed. What truly dictates your hair's characteristics are your genetics, hormones, age, and overall health – factors far beyond the reach of a razor.

The scientific evidence clearly demonstrates that shaving does not change how hair grows in terms of thickness, rate, color, or texture. The perception that it does is based on visual illusion rather than actual biological changes to the hair follicle or shaft. The American Academy of Pediatrics notes that hair grows at a consistent rate of approximately 1 cm per month, regardless of whether it has been shaved. This guideline specifically mentions that hair structure, growth rate, and other characteristics are determined by genetics and hormonal factors, not by shaving.

As it turns out, this is a myth: Shaving won’t make your hair regrow any thicker or faster. “After shaving, you may notice that your hair seems to grow back thicker and darker,” Dr. Bullock says, “but this is actually due to the variation of the hair shaft along its length, not because shaving has actually altered the hair follicles."

Contrary to a widely held belief, shaving does not alter hair density, thickness, or growth rate. This illusion arises from a purely visual and tactile phenomenon. When one shaves a hair, it is cut at the skin's surface, at the level of the hair shaft. The hair is then severed cleanly, giving it a blunt, rigid end, unlike a natural hair whose tip is tapered. This can make it feel sharper to the touch, more visible, and give it a thicker appearance. It may also appear darker because the freshly cut hair has not yet been exposed to light or external agents that slightly lighten it over time.

Pioneering forensic anthropologist Mildred Trotter's 1928 research paper 'Hair growth and shaving ' methodically examined the idea that shaving encouraged hairier regrowth. Recruiting four men to 'willingly and faithfully' carry out her directions, and with meticulous attention to detail, Trotter concluded that shaving did not have any effect on hair colour, texture or the rate of growth. 42 years later, the myth was clearly still prevalent enough to warrant another research project. Another clinical trial was conducted, this time by two scientists – Yelva Lynfield and Peter Macwilliams – who published their findings in the Journal of Investigative Dermatology in 1970. They also found 'no significant differences in total weight of hair produced in a measured area, or in width or rate of growth of individual hairs'.

In studying the effects of various physical and chemical treatments on hair growth after shaving, repeated shaving was in itself clearly shown to stimulate hair growth. New hair growth after shaving was not uniform in the various age groups. Furthermore, an increasing delay in hair regrowth was observed as the mice became older.

Despite common belief, shaving your hair does not make it grow back thicker or at a faster rate; this misconception was debunked by clinical studies in 1928. Shaving only slices off dead hair at the surface of the skin and does not remove hair under the skin, making it impossible to affect its color, thickness, or rate of growth.

Multiple clinical studies have confirmed that shaving doesn't change the color, thickness, or rate of hair growth. A foundational study from 1928 published in Anatomical Record and reaffirmed in Journal of Investigative Dermatology decades later found no measurable difference in hair regrowth after shaving. The Mayo Clinic and Cleveland Clinic agree, what you're seeing is just the natural texture of regrowing hair, not a biological response to shaving.

To set the record straight, shaving does not make your hair grow back thicker. “Shaving only gives the appearance of thicker hair,” Dr. Miller explains. “Normal hair tapers at the end. As this thinner end is shaved off, the thicker base is left behind, making it look thicker.”

Scientists consistently find that hair regrowth is in no way affected by shaving, or any other type of hair removal, with a 2007 British Medical Journal article stating that clinical trials as early as 1928 showed no effect on hair growth. The myth persists because stubble from shaving creates blunt ends that feel coarser to the touch, and new hair appears darker because it hasn't been exposed to elements that lighten it.

Shaving is a surface-level activity that only interacts with the hair shaft, not the follicle, which is the true architect of hair's color, texture, and thickness. A 1928 study in the Journal of Investigative Dermatology and subsequent dermatological reviews confirm that shaving does not alter hair density, thickness, or growth rate; any perceived changes are sensory, not structural.

No, you don’t get more hair growth from shaving. If you shave away the hair at the top of the skin, it does NOT affect the hair roots. Science also supports the idea that shaving hair does not affect the amount or rate of hair growth. For example, a 1970 study published in the journal “Plastic and Reconstructive Surgery” already showed that shaving hair did not affect the amount or rate of hair growth.

Furthermore, you can cut your hair or shave without damaging the hair structure because the cut is superficial. Most chemical hair removers also act superficially; however, electrolysis and yanking both attempt to destroy the hair bulb so hair cannot grow.

Multiple peer-reviewed studies, including those in the Journal of Investigative Dermatology and earlier works from 1928, have consistently shown that shaving does not affect hair diameter, color, or growth rate in humans; any perceived change is optical due to blunt tips.