How to Remove the Operation Mark After Hair Transplant?

It could be dye that the clinic used to bring out the sites. Normal shampoo will wash the dye off over time.

Scalp MicroPigmentation can cover up scars from hair transplant surgery.  Creams do not remove scars.  You would need an examination to find out if you are a candidate.

There is no way to remove this permanent mark (referred to as the linear scar, or strip scar). At this point, if you really wish to eliminate the appearance of the scar so you can cut your hair short, your best option is to undergo a hair transplant repair using FUE. This technique will harvest a few hundred grafts to fill and conceal your existing scar while leaving almost no visible scarring of its own.