Regaine Extra Strength Foam Hair Loss Treatment 60g -1 month supply. -For men who have a general thinning of hair on the top of the scalp (vertex). Not intended for frontal baldness or receding hairline. -Clinically proven to regrow hair in men with hereditary hair loss and help reverse its progression. -Works to enlarge shrunken follicles (increasing their size) to allow for healthy hair to develop over time. -The amount of regrowth is different for each person. -May not work for moderate to extreme degrees of thinning hair or hair loss. -It may take at least 4 months before you see results. -Ongoing use is necessary to improve and at least maintain hair growth.