The injections begin at the edge of the scalp, just above the ear, then form a circle around the head to the other ear. The success of the results rely on the use of a new generation of hyaluronic acids which have high viscosity and elasticity. This sophisticated product stays exactly where it is deposited, without spreading to the surrounding tissues and weighing them down. It leads to fibrosis at each injection point, which, like a staple or tongs, keeps the tissue subtly tightened.