Safety and Efficacy of Nitric Oxide Gel in Promoting Hair Growth in Male Human Subjects With Androgenetic Alopecia

Inclusion Criteria: 1. Male subjects \>= 20 and \<= 65 years of age. 2. Subjects with hair loss caused by androgenetic alopecia. 3. Subjects who are healthy without any serious diseases that require hospitalization during the study period. 4. Subjects who are capable of understanding and having signed the Informed Consent Form after detailed description of the treatment procedures and potential risks and benefits. Exclusion Criteria: 1. Subjects who received any treatment for hair loss within 6 months or finasteride within 12 months 2. Subjects with diagnosis of cancer and is still on active therapies. 3. Subjects with diagnosis of an active disease and is still under regular treatment for this disease 4. Subjects with hair loss caused by a known chronic disease. 5. Subjects who are on vasodilators or other medication with pharmacological actions that may lead to excessive formation of nitric oxide or may accentuate drug effects due to excessive formation of nitric oxide. 6. Subjects with thyroid disease. 7. Subjects iron-deficiency anemia. 8. Subjects with skin diseases of the scalp, including severe seborrhoeic dermatitis, psoriasis, lichenoid eruption, tinea capitis, or other scalp infections or infestations 9. Subjects with any known allergic reaction to any ingredient in the 2 gel preparations. 10. Subjects who have been enrolled into any clinical study in the preceding 6 months prior to randomization. 11. Subjects who have taken medications that are known to induce hypotrichosis or hypertrichosis.