REGAINE 5% SOLUTIONRegaine 5% Solution is used in the treatment of hair loss. It is most effective in treating hereditary hair loss or thinning at the top of the scalp? not in front.REGAINE SOLUTION SIDE EFFECTSApplication site irritationItchingHeadacheHOW TO USE REGAINE SOLUTIONUse this medicine in the dose and duration as advised by your doctor. Check the label for directions before use.HOW REGAINE SOLUTION WORKSRegaine 5% Solution is a vasodilator. It works by widening the blood vessels and provides better blood flow to the hair follicles. This prevents hair loss and stimulates re-growth resulting in longer? thicker and increased numbers of hair.