Eutectic lignocaine-prilocaine has the following unique property

Lignocaine or prilocaine cannot anaesthetize intact skin. Eutectic mixture is the combination of equal proportions of lignocaine and prilocaine at 25° C. This mixture has a lower melting point than any of the two ingredients. It helps to make the preparation oily that can be applied on the intact skin. Eutectic mixture can be used to anaesthetize intact skin.