GriMii is a new microjet injector that uses laser pulse energy to inject tattoo pigments into the scalp within 0.15 ~ 0.20mm in the depth for Scalp Micropigmentation without using a needle. GriMii is a noninvasive treatment causing minimal damage to the tissue with less pain and does not require local anesthesia. The perfect SMP result and visual can easily be achieved by GriMii.

An infrared laser beam of high energy is focused inside hyaluronic acid in a small chamber of a focal device. The laser instantly vaporizes hyaluronic acid and creates a bubble which explodes creating a huge instantaneous pressure gradient behind the membrane, thereby pressurizing the chamber behind the membrane. The elastic membrane transfers mechanical pressure to the tattoo pigment which sits on the other side of the membrane. The tattoo pigment is instantly propelled through the nozzle into the skin. The dots are placed at the upper epidermis in a size of 0.08mm to 0.20mm.