Hi, I was just wondering about how many follicles would be needed to fill in an inch long and a few mm wide area of scalp?

How many licks does it takes to finish a Tootsie Pop? In other words, I couldn’t tell you how many grafts would be required just by the simple question you asked. It depends on what you mean by a few millimeters — two, three, five?

It would also depend on:

• the location of the scar
• your hair shaft thickness and the scar thickness
• the contrast of your hair color to your skin color to minimize the appearance of the contrast
• the character of your hair (wavy, curley, straight)
• the length of your hair (very short hair will require more densities than longer length hair)

Generally you can achieve a good cosmetic effect with about 20 to 40 follicular units per square centimeter, but that number does not reflect the local skin dynamics or how the surrounding hair may lay.