Chin hair doesn’t just appear overnight—it follows a natural rhythm controlled by your body’s biology. Every strand goes through three key stages: the anagen phase, where hair actively grows; the catagen phase, a brief transition when growth stops; and the telogen phase, a resting period before the hair sheds and the cycle begins again.
What makes some chin hairs more stubborn than others comes down largely to androgens—the so-called male hormones that everyone produces. When these hormone levels rise or when your hair follicles become more sensitive to them, new and thicker hairs can sprout, especially on the chin. This is why, even after plucking or shaving, those same hairs seem to return stronger and faster each time.