<p>The invention concerns a dermal patch comprising a reservoir layer (11) made of a polymer gel designed to receive a liquid containing an active principle and having a first surface (21) to be applied on a user's skin to diffuse the active principle. The invention is characterized in that the patch further comprises a receiving layer (12) for receiving the liquid containing the active principle and transmitting the liquid to the reservoir layer, and an adhesive layer (13) maintaining the receiving layer (12) on a second surface (22) of the reservoir layer (11). The invention provides the advantage of a patch rechargeable at will and capable of being manufactured without prior incorporation of the liquid containing the active substance in the reservoir layer.</p>
