Personal sale means personal communication between the seller and the buyer in which the seller seeks to inform and persuade the buyer to purchase. A key fact in the definition of personal selling is that it takes place directly without intermediaries.
The main advantage of personal selling is that it causes a relatively high level of consumer demand since it is relatively difficult to avoid the seller's message in the face-to-face situation of potential buyers.
Personal selling still allows the seller to tailor the message to the specific needs and interests of the buyer. Personal sales are generally more effective than other promotional items.
However, given the enormous cost of personal selling in relation to the result, this form of promotion becomes completely inefficient and unusable.