The technique linked to the needle as the only tool that seems to us too prone to problems such as blues, bumps and pains, we will use the needle only as a tool of precision and adjustment. On the other hand, the use of the cannula, which is a very fine needle without a bevel with a hole at the side of its extremity, allows us to be more precise, with the only possible penetration point of the canula. It allows us to place the product on a wider area, to pass without damage where the needle woul ...