The loyalty clients is a concept of marketing and the publicity that tries to secure a lasting and long term relation of confidence with its potential consumers, so that don’t mention it serves to secure a sale and to break away from the enemy with the consumer. Post is important a good work sale and a service of outside necessary support if, a satisfied client is a client who returns time and time again, and fruit of that bond obtains a faithful client. For a company money much more costs to catch a new client who to return to sell a product to an old buyer, another factor which we would have to consider; therefore to invest in attendance not only will improve the relation with our client, but the investment will descend that we will have to realise to maintain a good flow of constant sales. In spite of the positive aspects fidelizar clients the companies are many that leave to an east side aspect and center all efforts in the initial sale, leaving to the drift the clients soon when these have some problem with the product. He is vitally important to offer quality products, competitive and useful for the society, but these are not endorsed by the technical support, the needs or the interests that can appear in the end user, our long term campaign will be disastrous, since a person who does not trust a mark is a lost buyer, whereas a satisfied buyer, without a doubt in its next purchase will put in front our products to the rest although a little must pay more if therefore it is required to him.