A shaving aid composition is provided that includes an organic polyhalogenic agent that both promotes post application foaming and increases lubricity. The shaving aid is optionally used to deliver one or more therapeutics to the skin of a subject and is therefore operable to prevent or treat a skin condition.

Cutting device for cutting a reinforcing ply (N) formed of a set of portions of thread, of given length, coated in a rubber compound, laid parallel to one another and making a given theoretical angle (a) with the longitudinal direction of the ply, characterized in that it includes a first element able, without proceeding to cut the said ply (N), to estimate the actual angle of the threads with the longitudinal direction (XX) of the device and a second element able to cut the ply (N) at the actual angle (a+da) estimated by the first element.