Used cosmetics often harbor significant amounts of bacteria and fungi. A product in the beauty case is particularly contaminated with germs.
If you skimp on sunscreen, you damage your skin: The protective effect is then considerably less than specified by the manufacturer. How severe is the damage?
Does hand disinfection really protect against pathogens better than washing hands alone? And how do you use the disinfectants correctly?
Washing hands protects against flu, colds, gastrointestinal infections and the like - but only if you do it right. That's how it's done.