It is possible for seborrheic alopecia to grow again in your twenties, but only through treatment, and its main treatment is medication, but also to pay attention to some details of life, in order to appear to grow again. The seborrheic alopecia is mostly considered to be the result of excessive sebum secretion due to increased androgens in the patient’s body, which affects the hair follicles, causing them to gradually appear atrophied and destroyed, so that hair loss occurs. The patient’s hair follicles are not damaged due to aging or disease, so by reducing the secretion of androgens and sebum, the patient’s hair can grow back healthy. Patients with seborrheic alopecia can take oral or topical medications to achieve this effect. Patients with seborrheic alopecia can also eat more vitamin-rich foods, especially vitamin A, which can effectively promote hair growth, and eat less food containing more fat and sugar.