Effect of Platelet-Rich Plasma on Scalp Hair Diameter

The study conducted on a small sample of 10 participants (7 men and 3 women) with an average age of 24.2 years in Pakistan found that platelet-rich plasma (PRP) injections significantly increased hair diameter. Measurements taken before treatment and 6 months after the third PRP injection showed an overall increase in mean hair caliber from 37.3 µm to 52.3 µm. Men experienced an increase from 39.1 µm to 53.9 µm, while women saw an increase from 33.0 µm to 48.7 µm, representing a 27.5% increase in men and a 31.3% increase in women. The study concluded that PRP is effective in increasing hair diameter, with a more pronounced effect in women.