After transplant surgery, it is important that your scalp does not come into direct contact with any foreign object. Many devices use teeth or spikes that are studded with a laser. You should not use such devices as they will damage your transplant. Instead, use a device that covers the entire scalp but does not directly touch the scalp. At the present time, only the iGrow® by Apira Science is safe and effective for patients immediately following transplant surgery.