Mirvaso (brimonidine) topical gel is a prescription medication specifically designed for the treatment of facial redness, or erythema, associated with rosacea in adults. It belongs to a class of drugs known as alpha-adrenergic agonists. Mirvaso works by constricting the dilated blood vessels on the face, which reduces the appearance of redness. It is applied topically to the affected areas of the face once a day, providing a temporary relief from the redness associated with rosacea. It is important for users to follow their healthcare provider's instructions closely when using Mirvaso, as improper use can lead to side effects or diminished effectiveness.