Dermatologist Camila Rosa has clarified that shaving does not thicken hair and waxing does not darken skin [1, 2].
These clarifications address widespread misconceptions regarding personal grooming that often lead consumers to choose less preferred hair removal methods based on inaccurate beliefs. By correcting these myths, medical professionals aim to help individuals make informed decisions about skin care and hygiene.
Rosa said that the belief that razors make hair grow back thicker is a myth [1, 2, 3]. The perception of thicker hair after shaving occurs because the blade cuts the hair at a blunt angle, leaving a flat edge that feels coarser than the tapered tip of a natural hair follicle [1, 2]. This is a tactile illusion rather than a biological change in the hair's structure or thickness [1, 2].
Regarding chemical and physical removal methods, Rosa said that wax does not darken the skin [1, 2]. Skin discoloration in areas subjected to hair removal is typically caused by other factors, such as friction, inflammation, or hormonal changes, rather than the waxing process itself [1, 2].
Throughout her guidance, Rosa said that genetics play the primary role in determining hair thickness and growth patterns [1, 2, 3]. No matter the method of removal, the underlying biological blueprint of the hair follicle remains unchanged by external cutting or pulling [1, 2].
Rosa's guidance encourages a shift toward evidence-based skin care. She said that understanding the science behind hair growth can reduce anxiety for those experiencing changes in their skin or hair texture over time [1, 2].
“Shaving does not thicken hair.”
This medical clarification underscores a gap between popular folklore and dermatological science. By decoupling the act of shaving from the perceived result of thicker hair, the guidance shifts the focus from the tool used to the genetic factors governing human anatomy, reducing unnecessary consumer fear regarding common grooming practices.
