What is Sons Minoxidil Sons Minoxidil solution increases blood flow and oxygen in vessels which reactivates and revitalises shrunken hair follicles. Who can use it Men with mild hair loss that are experiencing the early signs of a receding hairline and hair loss in the crown area. If you are a 2 on the Norwood Scale, this is the plan for you. Seek advice from your doctor if you are under 18 or over 65 years of age.