Hair transplantation is a surgical technique that removes hair follicles from one part of the body, called the 'donor site', to a bald or balding part of the body known as the 'recipient site'. Website - www.cosmoaid.com The technique is primarily used to treat male pattern baldness. Hair transplantation can also be used to restore eyelashes, eyebrows, beard hair, chest hair, groin hair and to fill in scars caused by accidents or surgery such as face-lifts and previous hair transplants.