A consumer purchase a brand of detergent that remember from the magazine that attractive makes he/she interests and want to buy it for use. And when he/she use it and get the bad result makes he/she remember that call short-term memory in the first time. And the next times he/she use it again and get the result same the past that makes he/she remember in long-term memory at last a consumer will remember that product is bad and will not purchase also. And he/she may be spread widely to people about feedback of this brand.