Typically, we can measure improvements in Hair Mass Index using HairCheck months before the results are visible to the naked eye. Increases in Hair Mass Index using the HairCheck device predict how much visual improvement the patient is likely to see in the months to come. It takes six to twelve months to judge the results of PRP “visually” in the mirror or with standardized photos. Measurements are taken every three months, so the plateau phase of improvement can be tracked. When Hair Mass Index starts to decline, the patient’s next PRP is planned. With the exception of alopecia areata, the average hereditary hair loss patient can expect to need PRP with ECM on an annual basis. There is no activity restriction after a PRP treatment. Patients may shower/shampoo/condition their hair normally just several hours after the treatment and resume normal daily and athletic activities. As mentioned previously, some brief mild inflammation noticeable as redness/pinkness and numbness of the scalp may be present for several hours. No harsh chemical coloring or perming treatments should be performed for at least 72 hours. Use of topical hair growth treatments like Minoxidil 82M or similar can resume the next day. Laser therapy treatments can also be resumed the next day.