Can testosterone alone cause hair loss even after nuking DHT?
    Research/Science 1/27/2026

    At a glance
    In this question or advice post, the primary subjects mentioned are
    💊 Dutasteride (oral) 0.5 mg daily
    💧 RU58841 (topical)
    💧 Pyrilutamide (topical)
    the tone is 😐 neutral.
    Testosterone can still cause hair loss even when DHT is blocked by dutasteride, especially if hair follicles are sensitive. Topical treatments like RU58841 or pyrilutamide may help, but their long-term effectiveness is uncertain compared to dutasteride.
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