Nizoral Anti-Dandruff Shampoo is a popular hair loss product available on Amazon Cyber Monday. While primarily known for its anti-dandruff properties, this shampoo also contains an active ingredient called ketoconazole, which has been shown to have anti-androgenic effects. Androgens, such as dihydrotestosterone (DHT), can contribute to hair loss in both men and women. By reducing the levels of DHT on the scalp, Nizoral Anti-Dandruff Shampoo can help prevent hair loss and promote hair regrowth. It is recommended to use this shampoo twice a week for best results. Additionally, it is gentle enough for daily use and suitable for all hair types.