Direct Hair Implantation (DHI) is an innovative hair transplantation technique that has recently gained popularity. It is a minimally invasive procedure designed to restore hair in areas affected by baldness or thinning. DHI differs from other hair transplant methods in the way the hair follicles are implanted.
During a DHI hair transplant, individual hair follicles are extracted from the donor area, typically located at the back or sides of the scalp, where hair growth is usually dense and unaffected by baldness.
In DHI, a specialized tool called a Choi implanter pen is used to directly implant the harvested hair follicles into the recipient area. The Choi pen has a hollow needle with a diameter ranging from 0.6 to 1.0 mm, allowing precise control during implantation.