Possible reasons for eyebrows getting less and less include baldness, seborrheic dermatitis, hypothyroidism, etc., which can be treated with the help of topical medication and oral medication. 1. Pemphigus vulgaris: less and less eyebrow hair may be pemphigus vulgaris, pemphigus vulgaris is a sudden and limited patchy alopecia, which may be related to endocrine disorders, bad moods, etc., and in severe cases, eyelashes and eyebrows will fall off. Such patients can be treated by topical or local injection of glucocorticoids, application of minoxidil, and oral medication such as cystine, calcium pantothenate, and vitamin B, etc., which can help to improve the eyebrow hair fall off. 2. seborrheic dermatitis: eyebrows less and less may be seborrheic dermatitis, mainly manifested in the facial skin erythematous rash, local scales, accompanied by obvious itching symptoms, can lead to severe eyebrow hair loss, scratching the eyebrow hair loss will be aggravated, such patients can be applied locally tacrolimus ointment, pimecrolimus cream and other medications to help improve the eyebrow hair loss. 3. Hypothyroidism: eyebrows less and less may be hypothyroidism, hypothyroidism patients with insufficient secretion of thyroid hormones in the body, the patient will appear body weakness, loss of appetite, hoarseness and other symptoms, serious patients will also lead to dry and rough skin, eyebrow and hair loss and other symptoms, such patients can be taken through the levothyroxine sodium tablets, thyroid tablets, etc., to replenish the body’s need for thyroid hormones, to improve the eyebrow hair loss. It should be noted that the above treatments should be carried out in regular medical institutions under the guidance of physicians to avoid the occurrence of adverse reactions.