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    GlossaryVasodilator

    substance that widens blood vessels, increasing blood flow

    A vasodilator is a substance that causes blood vessels to widen, or dilate, which increases blood flow. This can help lower blood pressure and improve circulation. Vasodilators are often used in the treatment of conditions like hypertension and heart disease, and they can also be found in some hair loss treatments to improve scalp blood flow and potentially stimulate hair growth.

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