Dead skin cells from the scalp flake off and frequently land on your shoulders and clothing when you have dandruff, giving you an unsightly and unclean appearance. The majority of the world's population must have experienced dandruff at some point in their lives. The degree of dandruff can, however, change with the season as it gets worse in the winter. Despite having a similar appearance, there are several forms of dandruff based on your scalp's makeup and the causes of skin flaking on the scalp.