Hello, I’m Doctor Jaehyun Park at Dana Plastic Surgery. Recently, on youtube there was a male patient Who underwent FUE hair transplant and had a two block haircut. He said that the scars were visible even though it was FUE. Size of extraction scar after FUE hair transplant But by looking at the photos he uploaded it was done by shaving in a line.

Theoretically, FUE method will leave 1.8 times more or 10 times more scar than the FUT depending on how many grafts were punched. It’s about dispersing the dot-shaped scar evenly without any pattern. If possible, getting a full shaven, marine cut or a two-block cut will be best. But if it is not possible, getting a non-shaven FUE will be the best method. If you get a line-shave, and if the density is too high

The dot-shaped scar will look just like a line which you have to be cautious about. And someone asked me a similar question. He asked “someone I know got FUE hair transplant but his scar was not visible But for some people the scars are visible, why does this happen? Does the doctor use a different punch size for each person?” For those of you who are curious about this, I will go into a little more detail.

We at Dana use a small-sized punch. In Korea, the most commonly used size is 1.0mm in diameter. 1.0mm is actually extremely small. the surgery cannot be performed by the naked eye. We have to use at least 5X high magnification telescope or a microscope in order to perform the surgery.

Does the size of a scar differ depending on the angle of the punch? If the punch goes into the skin at a 90-degree angle it will come out as the original size. But the punch has to go in the same angle as the hair growth. But at what angle do we usually punch at? There are people who have already experimented this. There are a lot of famous doctors like Zontos who have presented a thesis

about the angle of FUE punch which is around 45 degrees. Then if you calculate the area of the punch at 90 degrees and the punch at 45 degrees, you will be able to see the difference in the area of skin contact. In other words, some people have hair follicles that are almost lying down while others have hair follicles that grow straight up. The hair follicles that are lying down will be left with a bigger scar.

So instead of a circular scar, it will be shaped more like a rugby ball. But I’m talking about the extreme case. If the scalp laxity is high the skin will stretch even if it was a circle at first because of the gravity which will make the scar bigger. It also depends on what kind of punch the doctor uses.

Is it a manual punch? Automatic punch? If its automatic then is it sharp? Or is it flared? Or is it a dull or a blunt punch? is it 1.0mm or 0.9mm? We at Dana use 0.9 but in Korea the most commonly used size is 1.0mm. It was difficult at first when we reduced our size to 0.9mm. But when we compared 0.9mm to 1.0mm It felt much smaller.

You would think that it is only 10% difference right? What do you think producer moon? I think it will be 10% Right? But that is not true. If you calculate using the area of πr² The diameter will have 10% difference but the actual area of the circle will be 20% difference.

Just by reducing 0.1mm creates such difference. There are doctors who get satisfactory results by using smaller punch equipment While others have to use a bigger punch in order to get mediocre results. Is it possible to change the angle of the punch? Additionally, as the angle of the hair follicle gets lower

the chance of cutting into adjacent hair follicle will increase. This is just common sense. If I may add one more point It might be a little difficult to understand but say for instance that a hair follicle is at a low angle Which means it will leave a bigger scar right?

If the hair follicle was at an acute angle, it will be much better if we move the angle So that it is vertical right? Just by doing this there will be less scarring less damage to the hair follicle and the skin tissue. and there will be improvements in the blood circulation. Theoretically, punching at a vertical angle is better in all aspects than punching at an acute angle.

Then what are the fundamental methods of changing an acute angle to a vertical angle? There are 2 common methods. The first method is to use a saline solution. By injecting this into the scalp the hair follicles tend to look upwards. The second method is to pull the hair follicles upwards which will change the direction. This is a short clip about the method. By pulling the hair in this direction, the scalp

gets tight while the angle of the hair follicle changes into a vertical angle. But since we have to pull the scalp upwards like so. How do we do it when the patient is sitting down? I thought to myself “ah the patient needs something to lean their forehead on”. So, as you see in this clip, we are using a high-tech equipment. In other words, by making it tight upwards

it will result in less scarring with less damage to skin and hair follicle. Therefore, we are using this method to each and every one of our patients before surgery. It is comfortable for the patients while undergoing surgery. This is another reason why we get satisfactory results for our non-shaven FUE surgery process. "Next episode: 3 methods of scalp micropigmentation."

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