When it comes to a hair growth shampoo, you have two options: prescriptions or over-the-counter treatments. Prescription shampoos like ketoconazole are anti-androgenetic, meaning they prevent testosterone and dihydrotestosterone (DHT), two hormones associated with hair loss by targeting hair growth at the site of the follicle and helping to interrupt the hormone cycle locally that causes thinning,” explains Dr. Schweiger. “Over-the-counter growth shampoos typically contain amino acids and antioxidants to provide the components to rebuild hair as well as reduce damage and inflammation.”
Dupilumab is FDA approved for treating eczema aka atopic dermatitis and sold under the brand name Dupixent. As the story goes, a patient with alopecia totalis (a form of areata which leaves a person’s head completely bald) was being treated for eczema by the drug Dupixent. After 6 weeks the patient first began to notice progress in terms of hair growth and at 7 months she had noticeable pigmented hair growth on her scalp. Notably, the patient stopped taking the dupilumab for a period of time and noticed her growth subsided; when she began taking the drug again the hair improved once more. This provides another useful therapy option for patients seeking treatment for AA. One would imagine a topical version would be worthwhile to investigate.