Some men notice that first extra millimeter of forehead and take action immediately to put a stop to their hair loss. Others, not so much. Some men don’t really notice that they’ve started shedding until they can be practically labeled as bald. And then, is it too late? Can that hair come back? Revivogen can rejuvenate hair follicles and promote regrowth, but there's a window of opportunity. Here's why earlier is better when it comes to hair loss treatment and hair regrowth.