I had two hair transplantations in last two years. First one as in France and the other one was in Turkey. Redness on recipient area after my first surgery increased in place of decreasing following the second surgery. When I look at the mirror, pinkness darker than my skin color can easily be seen. Even I had a natural result after hair transplantation; because of this situation it is slightly noticeable that I had hair transplantation.
Redness after hair transplantation is normal, but the length of it is not normal. Since it looks like it is related to skin, it is beneficial for you to check it with your doctor or a dermatologist.