Roberta, you'd be surprised how many people do not clean their makeup tools on a day to day basis. I am guilty of not cleaning once or twice a month, but if I keep my tools dirty, my face becomes clogged and greasy. I love working with makeup and find myself trying all sorts of different techniques. Cleansing and toning have become essential, though I need to purchase new cleanser and toner because I'm running super low. I have resulted in using my shower wash and it's doing a number on my skin.