Hello . I am taking finasteride for 6 years and I want to combine low dose of dutasteride 0.5 mg once a week. Is it can damage my hair? I ask this because I understood that it raises the scalp testosterone for about 100% which can raise the DHT. Dutasteride half life is about 5 weeks, will I have 6 days gap of high scalp testosterone without the help of dutasteride blockers? Or the blockers remains in the blood as well? For how long scalp testosterone remains after 0.5 my of dutasteride? Thank..