What you are describing is bitemporal recession. And it occurs naturally once a male hits puberty. So, once it sets in its difficult to revert. But my questions are pertaining to your lifestyle. The most common reasons for male pattern hair loss is bad eating and sleeping habits, stress and lack of exercise. Please try to modify if they are unhealthy. And visit a dermatologist. Hair treatment takes a while . You need patience to see results. Just one shampoo or lotion will not help you.