After shaving, eyebrow hair usually grows out in about 1-2 weeks, but it may take about 1-2 months to fully reach normal condition. The growth cycle of eyebrow hair is the same as the hair growth cycle, including the anagen, regression and resting phases, and its growth rate is related to genetic factors, nutritional status, neuropsychiatric factors, hormone levels, as well as drug factors and seasonal climate. Eyebrow hairs are short hairs that grow faster in the early stage, usually forming a pile in about 1-2 weeks; later growth slows down, reaching a normal eyebrow state in about 1-2 months, when growth stops. Under normal circumstances, eyebrows can grow, but certain specific diseases, such as plucking fetish and baldness, can slow down the growth of eyebrows. Active treatment of the primary disease is beneficial to the growth of eyebrows.