This client ( my brother) is concerned about male pattern hair loss. Male pattern baldness is hair loss and thinning of the hair that affects the hairline and top (crown) of the head. Male pattern baldness is a very common condition, affecting up to 1 in every 2 men over 40 years of age. PRP therapy can help restore your hair to a healthier, fuller state. PRP treatment is a very safe and effective treatment for hair regrowth and hair loss prevention.