Chin hair, like all body hair, grows in cycles. It starts with the **anagen phase**, when “the hair actively grows.” This is followed by the **catagen phase**, a brief period where the hair “stops growing and detaches from its blood supply.” Lastly, the **telogen phase** is when “the hair rests before shedding” and new growth begins.
One of the key drivers of chin hair growth is **androgens**—male hormones found in both men and women. “An increase in androgen levels or a heightened sensitivity to these hormones can stimulate more noticeable facial hair growth.”
Changes in hormone levels, especially due to age, genetics, or certain medical conditions, may lead to more visible chin hair. While often normal, unexpected or rapid growth could signal a hormonal imbalance.Understanding this cycle and the hormonal influence behind it helps explain why some people develop more chin hair than others.